HS1B/HS2B Interlock Switches
Machine stops when the door is opened.

• When mounting the actuator on a movable door and theinterlock switch on a machine, opening or closing status of
the door can be detected.
• Contact parts degree of protection: IP67 (IEC 60529)• NC contacts feature direct opening mechanism(IEC/EN 60947-5-1).
• Special actuator prevents defeating(ISO 14119, EN 1088)• Detects entry to hazardous area when mounted on safety
guards.
• Two actuator entry slots and three conduit ports are pro­vided.
• HS1B: Rugged die-cast aluminum housing• HS2B: Compact and lightweight plastic housing
HS9Z-A2
HS9Z-A1

Parts and Functions• LED Indicator (optional)(green or red)

• Three Conduit Ports (G1/2)
Use IP67 conduit or connector(see page 105 for details).
• M3.5 Screw
Terminal Wiring• LED Indicator (optional)• M3.5 Screw Terminals for Wiring (inside)• Two Actuator Entry Slots• Three Conduit Ports (G1/2)
Use IP67 conduit or connector(see page 105 for details).

HS2B(plastic housing)• Two Actuator Entry Slots
HS1B (die-cast aluminum housing)• Straight Actuator(SUS304)
HS9Z-A1

1• Right-angle Actuator(SUS304)
HS9Z-A2• Angle Adjustable Actuator for hinged doors
HS9Z-A3

HS1B/HS2B Interlock Switches
Actuators, Special Key Wrench, and PlugInterlock Switch
Contact
Model
Configuration
1NC-1NO
3
1

HS1B

Zb

4
2

2NC
3
1

Zb

4
2

1NC-1NO
HS2B

3
1

Zb

4
2

Actuator is not supplied with the interlock switch, and must beordered separately.

Indicator

Part No.

—

HS1B-11R

With

HS1B-114R-∗—

HS1B-02R

DescriptionWith

HS1B-024R-∗—

HS2B-11NB

With

HS2B-114NB-∗

Part No.

Straight Actuator (mainly for sliding doors)

HS9Z-A1

Right-angle Actuator (mainly for hinged doors)

HS9Z-A2

Angle Adjustable Actuator (mainly for hinged doors)

HS9Z-A3

Special Key Wrench for HS1B

HS9Z-T1

Conduit Port Plug for HS2B

HS9Z-P1

The contact configuration represents the status when the actuator isinserted.
• Special key wrench HS9Z-T1 is supplied with the HS1B interlock switch.
• Specify an indicator color code in place of ∗ in the Part No.
G: green, R: red• Actuator is not attached to the interlock switch and must be orderedseparately.

Contact Ratings

Note: Ratings approved by safety agencies: A300: AC-15 3A/250V

Rated Thermal Current (Ith)300V (between LED
and ground: 60V)
10A

Rated Voltage (Ue)

30V

125V

Resistive load (AC-12)

10A

Inductive Load (AC-15)

Rated Insulation Voltage (Ui)Rated Current(Ie) (Note)AC
DC

Indicator
Rated Voltage

24V DC

Rated Current

10 mA

250V

Light Source

LED

10A

6A

Light Color

G (green), R (red)

10A

5A

3A

Resistive load (DC-12)

8A

2.2A

1.1A

Inductive Load (DC-13)

4A

1.1A

0.6A

• The lens cannot be replaced.

• Minimum applicable load (reference value): 3V AC/DC, 5 mA
(Applicable range is subject to the operating conditions and load.)

Specifications

Applicable Standards

Applicable Directive
OperatingTemperature
Relative Humidity
Storage Temperature
Pollution Degree
Impulse Withstand
Voltage

ISO14119
IEC60947-5-1
EN60947-5-1(TÜV approved)
GS-ET-15 (TÜV approved)
UL508 (UL listed)
CSA C22.2 No.14(c-UL listed)

Part No. Development
HS1B

H S 1 B - 02 4 R - R
Indicator Color
G: Green
R: RedIEC 60204-1/EN 60204-1 (applicable standards for use)
2006/95/EC (Low Voltage Directive) and 2006/42/EC(Machinery Directive)

Housing Color
Red only
Indicator Rated Voltage
4:
24V DC
Blank: Without indicator–20 to 70°C (no freezing)
45 to 85% (no condensation)–40 to +80°C (no freezing)3

Contact Configuration
11: 1NC-1NO
02: 2NC

4 kV

Between live and dead metal parts: 100 MΩ minimum
Insulation Resistance Between live metal part and ground: 100 MΩ minimum(500V DC megger)
Between live metal parts:
100 MΩ minimum
Between terminals of the same pole: 100 MΩ minimum
Electric Shock
HS1B: Class I (IEC 61140)
Protection
HS2B: Class II (IEC 61140)
Degree of Protection IP67 (IEC 60529)
Shock Resistance
Damage limits: 1000 m/s2
Operating extremes:
Vibration Resistance 10 to 55 Hz, amplitude 0.5 mm
Damage limits: 30 Hz, amplitude 1.5 mm
Actuator Operating
0.05 to 1.0 m/s
Speed
Direct Opening Travel 11 mm minimum
HS1B, HS2B (without actuator retaining mechanism):
20N minimum
Direct Opening Force
HS2B (with actuator retaining mechanism):
36N minimum
Operating Frequency 900 operations per hour
Mechanical Life
1,000,000 operations minimum (GS-ET-15)
100,000 operations minimum (operating frequency 900
Electrical Life
operations per hour, load AC-12, 250V, 6A)
Conditional
100A (250V) (Use 250V/10A fast-blow fuse for short-cir­Short-circuit Current cuit protection.)
HS1B: 280g
Weight (approx.)
HS2B: 130g

HS2B

H S 2 B - 11 4 N B - R
Indicator Color
G: Green
R: RedHousing Color
Black only
N: Actuator Retaining Mechanism
Suitable for applications where
inserted actuators should notcome off easily.
Indicator Rated Voltage
4:
24V DC
Blank: Without indicator
Contact Configuration
11: 1NC-1NO

2

HS1B/HS2B Interlock Switches
Circuit Diagram and Operating Character­istics• Door closed• Machine ready tooperateDimensions
HS1B using the Straight Actuator (HS9Z-A1)(Horizontal Mounting)

68.8
13.8
2

10

ø5

Actuator

7.5

Conduit Port
G1/2

.4

4
49.5

4
+

-

-

35
40
4
15

Monitor Circuit

6.5 ±1.0∗
4.5(Vertical Mounting)
54.3
13.8

RP

3-4: Closed

3-4: OpenMonitorCircuit

1-2: Open

1-2: Closed--(Horizontal Mounting)

The LED indicator terminal is independent of door
status, and thus can be wired as necessary.

MonitorCircuit

1-2: Closed

1-2: Open

35
40
4
15

RP

61
6 2

36.5
10
.4

RP: Actuator Mounting
Reference Position
Conduit Port
G1/2

ø5

Actuator

7.5

Actuator Cover

4
49.5

125

4.5

Slot Plug(Note)

4
15

35
40

3-4: Open30

17.5 ±1.0∗
113-4: Closed

4.5

42

HS1B using the Right-angle Actuator (HS9Z-A2)

42
52
64

+

Interlock Switch
Mounting Hole Layout.7+2-M5 Screws

43
40

4

Monitor Circuit

Monitor Circuit

3

Main
Circuit

8.5 ±1.0∗

R2

HS1B-02
(2NC)

4

2

22

Circuit
Diagram1

Main Circuit

3

ø

.7

Actuator CoverMain Circuit

2

Conduit Port
G1/2

4
5.

R2

Actuator

Main
Circuit

1

125
36.5
10

49.5
2

30
9

22
40
43

+

Slot Plug(Note)

52
64

4

3

125

42

3

Circuit
Diagram2

Main Circuit

2

1

Main Circuit

1

Monitor Circuit

Actuator Cover

HS1B-11
HS2B-11(1NC-1NO)

RP: Actuator Mounting
Reference Position

36.5

43
40
22

Door

RP

30
9

7
2.
R

Interlock Switch
StatusStatus 2• Door open
• Machine cannot be
started

42
52
64

Status 1(Vertical Mounting)
46.5
6

RP

30

49.5
2
R2

.4

Conduit Port
G1/2

52
64

ø5

42
22

.7

40
43

125
36.5
10

Actuator
19.5 ±1.0∗11Interlock Switch
Mounting Hole Layout

35
40
4
15

2-M5 Screws

4.5

42

Actuator CoverNote: Plug the unused actuator entry slot using the slot plug sup­plied with the interlock switch.
* Actuator center position

3

HS1B/HS2B Interlock Switches
HS2B using the Straight Actuator (HS9Z-A1)(Horizontal Mounting)
RP: Actuator Mounting
Reference Position

Conduit
Port G1/2

36.5

56.7
13.8

54.3
13.8

RP

Conduit
Port G1/2

30
9Actuator

7.5

52
57

Actuator4

37.4

Actuator Cover

42

22
40
43

42
52
57

43
40
22

ø5

ø5
.

.4

4

30
9

(Vertical Mounting)

RP

37.4

Actuator Cover

96
98

36.5
96
98

15

35
40

10

42

2-M5 Screws

Interlock Switch
Mounting Hole Layout

15

Slot Plug(Note)

3540

6.5 ±1.0∗
108.5 ±1.0∗

HS2B using the Right-angle Actuator (HS9Z-A2)(Horizontal Mounting)30

RP(Vertical Mounting)

Conduit
Port G1/2

36.5

48.9
6

46.5
6

RP

30

Conduit
Port G1/2

98
96
36.5

37.4

4

52
57

Actuator Cover

96
98

15

35
40

42

15

2-M5 Screws

10

19.5 ±1.0∗
11∗

35
40

Slot Plug(Note)

42
22

Actuator

17.5 ±1.0∗
11∗
10∗

37.4

.4

7.5

ø5

Actuator
Actuator Cover

40
43

42
52
57

22

43
40

ø5

.4

RP: Actuator Mounting
Reference Position

Interlock Switch
Mounting Hole Layout

Note: Plug the unused actuator entry slot using the slot plug
sup­plied with the interlock switch.

Actuator Dimensions

Actuator
Actuator Cover Mounting
(red)
Holes

.2

Actuator Cover(red) (Note)

.2

R3

20

2
Door Hinge

Angle Adjustment Screw(M3 hexagon socket head screw)
30

58
2-M6 Screws
Actuator
Mounting
Holes

2

°

90

33 max.
12
(21)
1

2
4.1

4.1

5

2

18

Stopper Film
(Note)

44
58
72

22

R3

41.5
10.5
1

7.4

29.2

20
11

2-M6
Screws

29.2
43

49.3

Angle-adjustable Actuator HS9Z-A3

20°

7.4

18.3
1

22

.2

40
22

22

Actuator
Mounting
Holes

R3

29.2
43

9
2-M6
ScrewsRight-angle Actuator HS9Z-A2

40

Straight Actuator HS9Z-A1

Note: The actuator cover and actuator stop films are supplied with the actuator and used when adjusting the actuator position.
Remove the actuator cover and actuator stop film after the actuator position is determined.

4

HS1B/HS2B Interlock Switches
Safety Precautions• In order to avoid electric shock or fire, turn power off before installation, removal, wire connection, maintenance, orinspec­tion of the interlock switch.
• If relays are used in the circuit between the interlock switch
and the load, consider the danger and use safety relays,
since welded or sticking contacts of standard relays may
invalidate the functions of the interlock switch. Perform risk
assessment and establish a safety circuit which satisfies therequirement of the safety category.

• Do not place a PLC in the circuit between the interlock
switch and the load. Safety security can be endangered in
the event of a malfunction of the PLC.
• Do not disassemble or modify the interlock switch, otherwise
a malfunction or an accident may occur.
• Do not install the actuator in the location where the humanbody may come into contact. Otherwise injury may occur.

Instructions• Regardless of door types, do not use the interlock switch asa door stop. Install a mechanical door stop at the end of thedoor to protect the interlock switch against excessive force.
• Do not apply excessive shock to the interlock switch when
opening or closing the door. A shock to the interlock switch
exceeding 1,000 m/s2 may cause damage to the interlock
switch.
• When wiring, unscrew the cover with part number label
only. Unnecessary loosening of other screws may cause a
malfunc­tion of the interlock switch.
• Prevent foreign objects such as dust and liquids from entering the interlock switch while connecting a conduit or wiring.
• If the operating atmosphere is contaminated, use a protective cover to prevent the entry of foreign objects into theinterlock switch through the actuator entry slots.
• Entry of a considerable amount of foreign objects into theinterlock switch may affect the mechanism of the interlock
switch and cause a breakdown.
• Plug the unused actuator entry slot using the slot plug sup­plied with the interlock switch.
• Do not store the interlock switches in a dusty, humid, ororganic-gas atmosphere.
• Use dedicated actuators only. When other actuators areused, the interlock switch may be damaged.
• Do not modify the actuator, otherwise it will damage theinterlock switch.
• The HS1B cover uses special screws which cannot be
removed or tightened by general drivers. Use the special
wrench supplied with the interlock switch.

When using the HS9Z-A2 Right-angle Actuator• When the door hinge is on the extension line of the interlock
switch surface:

Min
s
adiu
mR
imu 0 mm
23

s
adiu
mR
m
imu
Min 130 m

Door Hinge• When the door hinges on the extension line of the actuator
mounting surface:HS9Z-A2
Actuator

ius

s
adiu
mR
imu 0 mm
24

ad
mR
imu
Min 0 mm40

Min

Door Hinge

When using the Angle-adjustable HS9Z-A3
Actuator• When the door hinge is on the extension line of the interlock
HS9Z-A3 Actuatorswitch surface:

Minimum Radius of Hinged Door
• When using the interlock switch for a hinged door, refer tothe minimum radius of doors shown below. For the doors
with small minimum radius, use the angle adjustable actuator(HS9Z-A3).

M

M

in

in

im
u
50 m R
m ad
m iu

s

Note: Because deviation or dislocation of hinged door may occur
in actual applications, make sure of the correct operation
before installation.

s• When the door hinge is on the extension line of the actuator
mounting surface:HS9Z-A3 Actuator

M

M

in

in

im
u
50 m R
m ad
m iu

s

5

im
u
80 m
m Rad
m iu

im
u
80 m
m Rad
m iu

s

HS1B/HS2B Interlock Switches

Mounting Examples

Applicable Cable Glands

Mount the interlock switch on a fixed machine or guard,
and mount the actuator on the hinged door. Do not mountboth interlock switch and actuator on the hinged doors,
otherwise malfunction will occur.

• Use IP67 cable gland.
30 mm
max.

Instructions

G1/2

Mounting on Sliding Doors
9 mm max.

Door
HS9Z-A1 Actuator

Refer to the instruction sheet from the URL below forrecommended cable glands.
https://apac.idec.com/idec-apac/en/SGD/c/HS1B_2B_Series

Door Stop
Mounting on Hinged Doors

Applicable Wire Size
• 0.5 to 1.25 mm2 (AWG20 to AWG16)

Latch

Recommended Tightening Torque of Mounting
ScrewsHS9Z-A1 Actuator
HS9Z-A2 Actuator

Applicable Crimping Terminal
HS1B
Use Crimping Terminal 1 for terminals other than the
ground ter­minal.
Use Crimping Terminal 2 for the ground terminal.
HS2B
Use Crimping Terminal 1 for all terminals.

6.9 max.

ø3.6 min.

Crimping Terminal 1

3.8 max.

3.5 min.

ø4.1 min.

7.6 max.

3.5 max.

3.6 min.

Crimping Terminal 2• Use an insulation tube on the crimping terminal.
Wire

Approx. 4mm

Crimping Terminal• Interlock Switches
HS1B: 4.5 to 5.5 N·m (two M5 screws)
HS2B: 3.2 to 3.8 N·m (two M6 screws)• Terminal screw: 0.9 to 1.1 N·m (M3.5 screws)• Actuators (HS9Z-A1/A2/A3)
4.5 to 5.5 N·m (two M6 screws)• Mounting bolts must be provided by users.
• The above recommended tightening torques of themounting screws are the values confirmed with hex
socket head bolts. When other screws are used andtightened to a smaller torque, make sure that the screws
do not come loose after mounting.

Conduit Port Opening (HS2B)• The HS2B has three conduit ports, which
are molded without opening.
• Make an opening for wire connection
by breaking one of the conduit-port
knockouts on the interlock switch
housing using a screwdriver.
• When breaking the conduit port, takecare not to damage the contact block and other parts
inside the housing.
• Cracks or burrs on the conduit entry may deteriorate thehousing protection against water.
• When changing to another conduit port, close the unused
opening with an optional plug (Part No.: HS9Z-P1).

Insulation Tube

• When using stranded wires, make sure that loose wires
do not cause short circuit. Also, do not solder the terminal to prevent loose wires.

EP5554A-HS1B2B_August 2023

6

Ordering Terms and Conditions
Thank you for using IDEC Products.
By purchasing products listed in our catalogs, datasheets, and the like (hereinafter referred to as “Catalogs”) you agree to be bound by these terms and conditions. Please readand agree to the terms and conditions before placing your order.

1. Notes on contents of Catalogs

3. Inspections(1) Rated values, performance values, and specification values of IDEC products
listed in this Catalog are values acquired under respective conditions in
independent testing, and do not guarantee values gained in combined
conditions.
Also, durability varies depending on the usage environment and usage
conditions.
(2) Reference data and reference values listed in Catalogs are for reference
purposes only, and do not guarantee that the product will always operate
appropriately in that range.
(3) The specifications / appearance and accessories of IDEC products listed in
Catalogs are subject to change or termination of sales without notice, for
improvement or other reasons.
(4) The content of Catalogs is subject to change without notice.

2. Note on applications(1) If using IDEC products in combination with other products, confirm theapplicable laws / regulations and standards.
Also, confirm that IDEC products are compatible with your systems, machines,
devices, and the like by using under the actual conditions. IDEC shall bear no
liability whatsoever regarding the compatibility with IDEC products.
(2) The usage examples and application examples listed in Catalogs are forreference purposes only. Therefore, when introducing a product, confirm theperformance and safety of the instruments, devices, and the like before use.
Furthermore, regarding these examples, IDEC does not grant license to use
IDEC products to you, and IDEC offers no warranties regarding the ownershipof intellectual property rights or non-infringement upon the intellectual
property rights of third parties.
(3) When using IDEC products, be cautious when implementing the following.
i. Use of IDEC products with sufficient allowance for rating and 		
performanceii.	Safety design, including redundant design and malfunction prevention
design that prevents other danger and damage even in the event that an
IDEC product failsiii.	Wiring and installation that ensures the IDEC product used in yoursystem, machine, device, or the like can perform and function according
to its specifications(4) Continuing to use an IDEC product even after the performance has
deteriorated can result in abnormal heat, smoke, fires, and the like due toinsulation deterioration or the like. Perform periodic maintenance for IDEC
products and the systems, machines, devices, and the like in which they areused.
(5) IDEC products are developed and manufactured as general-purpose products
for general industrial products. They are not intended for use in the following
applications, and in the event that you use an IDEC product for theseapplications, unless otherwise agreed upon between you and IDEC, IDEC shallprovide no guarantees whatsoever regarding IDEC products.
i.	Use in applications that require a high degree of safety, including nuclear
power control equipment, transportation equipment (railroads / airplanes/ ships / vehicles / vehicle instruments, etc.), equipment for use in outerspace, elevating equipment, medical instruments, safety devices, or
any other equipment, instruments, or the like that could endanger life or
human healthii.	Use in applications that require a high degree of reliability, such asprovision systems for gas / waterworks / electricity, etc., systems that
operate continuously for 24 hours, and settlement systems
iii.	Use in applications where the product may be handled or used deviatingfrom the specifications or conditions / environment listed in the Catalogs,
such as equipment used outdoors or applications in environments
subject to chemical pollution or electromagnetic interference
If you would like to use IDEC products in the above applications, be sure
to consult with an IDEC sales representative.

Head Office
USA
EMEA

We ask that you implement inspections for IDEC products you purchase without
delay, as well as thoroughly keep in mind management/maintenance regarding
handling of the product before and during the inspection.

4. Warranty(1) Warranty period
The warranty period for IDEC products shall be one (1) year after purchase ordelivery to the specified location. However, this shall not apply in cases where
there is a different specification in the Catalogs or there is another agreementin place between you and IDEC.
(2) Warranty scope
Should a failure occur in an IDEC product during the above warranty period
for reasons attributable to IDEC, then IDEC shall replace or repair that
product, free of charge, at the purchase location / delivery location of the
product, or an IDEC service base. However, failures caused by the following
reasons shall be deemed outside the scope of this warranty.
i. The product was handled or used deviating from the conditions / 		environment listed in the Catalogs
ii. The failure was caused by reasons other than an IDEC productiii. Modification or repair was performed by a party other than IDEC
iv. The failure was caused by a software program of a party other than 		IDEC
v. The product was used outside of its original purposevi.	Replacement of maintenance parts, installation of accessories, or the like
was not performed properly in accordance with the user’s manual and
Catalogs
vii. The failure could not have been predicted with the scientific and 		technical standards at the time when the product was shipped from 		
IDEC
viii.	The failure was due to other causes not attributable to IDEC (including
cases of force majeure such as natural disasters and other disasters)
Furthermore, the warranty described here refers to a warranty on the IDEC
product as a unit, and damages induced by the failure of an IDEC product are
excluded from this warranty.

5. Limitation of liability
The warranty listed in this Agreement is the full and complete warranty for IDEC
products, and IDEC shall bear no liability whatsoever regarding special damages,
indirect damages, incidental damages, or passive damages that occurred due to an
IDEC product.

6. Service scope
The prices of IDEC products do not include the cost of services, such as dispatching
technicians. Therefore, separate fees are required in the following cases.
(1) Instructions for installation / adjustment and accompaniment at test operation(including creating application software and testing operation, etc.)(2) Maintenance inspections, adjustments, and repairs(3) Technical instructions and technical training(4) Product tests or inspections specified by you
The above content assumes transactions and usage within your region. Please
consult with an IDEC sales representative regarding transactions and usage outsideof your region. Also, IDEC provides no guarantees whatsoever regarding IDEC
products sold outside your region.

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Specifications and other descriptions in this brochure are subject to change without notice.
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