Mechanical pressure switch

Relative pressure switch
Type 620/625

Type 620 and 625 pressure switches, with 13 pressure ranges,
are suitable for liquids and gases. Body materials are available inplastic, brass and aluminium, with a choice of NBR, FPM, EPDM
and silicone diaphragms.
Very high precision through finely tuned measurement stages
and high long term stability. Rugged design and especially suitable for use in general industrial equipment
construction, process technology and food automation.

Pressure range-4 ... -900 mbar /2 ... 6000 mbar

+ High accuracy by 13 ideally designed pressure range
increments+ Switching differences adjustable+ High long term stability with repro-ducibility of switching
points < ± 0.3 mbar
+ Customer specific switching points adjustable in factory+ Rugged industrial switch with excellent Price /performance ratio

Pressure and flow

Huba Control Type 620/625 | Technical data subject to change | Edition 09/2020

1/5

Technical overview
Pressure range
Relative
Negative

2 ... 6000 mbar
-4 ... -900 mbar

Operating conditions
MediumLiquids and nuetral gases
0 ... +80 ºC-10 ... +80 ºC-10 ... +80 ºC-40 ... +80 ºC+65 ºC-40 ... +80 ºC
See order code selection table
2 mbar
1 mbar

NBR based
FPM
EPDM
Q (Silicone)
AmbientStorage

Temperature

Tolerable overload
Lowest turn-on pressure
Lowest swiching difference
Materials
Case

Diaphragm
Materials in contact with the medium

Base type 620
Base type 625
Other components

Fibreglass reinforced plastic
NBR based
EPDM
FPM
Silicone
ABS or PA
Aluminium, nickel plated brass
X 5 CrNi 18-10, 1.4301
Polyacetate (only at negative)

Electrical overview
Nominal voltage
Nominal current for resistive loading
Nominal current for motor loading
Contact system
Service life

250 VAC
1A
6A
0.5 A
3A
Changeover contact
Mechanically
106 switching cycle 1)

Protection standard
Without coverWith cover 2)

IP 00
IP 54

Repeatability±5% of the switching point±10% of the switching point

With diaphragm NBR based / Silicone
With diaphragm FPM / EPDM minimum ±0.6 mbar

Electrical connections
Screw terminals (Option)
Tab connectors (AMP)
Cable gland PG 11

6.3 mmwith cover

Pressure connections

Inside / outside thread
Connection pipe / thread
Thread with counternut

Type 620
Type 625

minimum ±0.3 mbar

M5 / M12x1
Ø 6 mm / M12x1
M12x1 (CuZn nickel plated), G ⅛, G ¼

Installation arrangement
For switching points calibrated in the factory
Indicate installation arrangement.
Remark:By changing the mounting position the switching points also change. The adjustment ranges are in relation with the mounting position.
WeightType 620~ 70 g~ 100 g~ 200 gwith aluminium basewith base brass

Type 625
Packaging
Single packaging in cardboard
Multiple packaging in cardboard

per 18 pcs.

Legend to cross-section drawing
12345671)

2/5The permitted switching difference has to be respected

Pressure and flow2)

Switching point setting
AMP tab connectors
Switching difference setting
Compression spring
Changeover contact
Contact element
Diaphragm

For installation arrangement electrical connections upward

Huba Control Type 620/625 | Technical data subject to change | Edition 09/2020

1

Order code selection table

Pressure range

620.
p max.
30 mbar
300 mbar
300 mbar
300 mbar
300 mbar

2 ... 8 mbar
6 ... 75 mbar
12.5 ... 80 mbar
12.5 ... 200 mbar
25 ... 220 mbar

1)

Hose connection Ø 6 mm and M12x1

Pressure connection /pressure case

Inside thread M5 and M12x1
NBR based
FPM
EPDM
Q (Silicone)
Two factory set switching points
One factory set switching point high
One factory set switching point low

Diaphragm material

Switching points (optional)

pt 2)
50 mbar
500 mbar
500 mbar
500 mbar
500 mbar
ABS
PA 66
ABSPA 66

Switching capacity 250 VAC
1A
1A
6A
1A
6A
... +70 ºC... +80 ºC... +70 ºC... +80 ºC

99999

Pressure range 1)

2 ... 8 mbar
6 ... 75 mbar
12.5 ... 80 mbar
12.5 ... 200 mbar
25 ... 220 mbar
80 ... 2000 mbar
120 ... 2200 mbar
1000 ... 6000 mbar
-4 ... -30 mbar
-15 ... -80 mbar
-30 ... -150 mbar
-50 ... -600 mbar
-100 ... -900 mbar
G⅛

Pressure connection /pressure case

Diaphragm material

Switching points (optional)

M12x1
G¼

p max.
30 mbar
300 mbar
300 mbar
300 mbar
300 mbar
6000 mbar
6000 mbar
6800 mbar

pt

50 mbar
500 mbar
500 mbar
500 mbar
500 mbar
10000 mbar
10000 mbar
10000 mbar

Switching capacity 250 VAC
1A
1A
6A
1A
6A
1A
6A
6A

-50 mbar-300 mbar-300 mbar-1000 mbar
-1000 mbar
Aluminium
Brass
Aluminium
Brass
Aluminium
Nickel plated brass 5μm-100 mbar-500 mbar-500 mbar-1000 mbar
-1000 mbar

1A1A
6A
6A
6A

NBR based
FPMEPDM
Q (Silicone)
Two factory set switching points
One factory set switching point high
One factory set switching point low2)0123239999999
90
1
2
34
5
6766666

12
34
5

1
B
2
34A

(please specify on order)(please specify on order)(please specify on order)

Order number105836
104259102872103479
103491104551Pressure and flow

502464W
RU
596

Cover of PG11 on the side
Mounting bracket with hole Ø 12.5 mm for M12Mounting bracket with hole Ø 14 mm for G ¼
Connector set (Tab connectors AMP)
Screw clamps set
Calibration certificate

Other pressure ranges on request

4625. X X X X X

Accessories 3)

1)

1
2
3
45

(please specify on order)(please specify on order)(please specify on order)

Order code selection table
Pressure mode3

X X X X X

1Relative
Negative22)

pt = test pressure3)

02
46W
R
U

Accessories supplied loose

Huba Control Type 620/625 | Technical data subject to change | Edition 09/2020

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LDimensions in mm / Electrical connections

XX
G¼G⅛
M12X1L
1616
14For vacuum:
3 - NC contact

1 Feeder (COM)2 NC contact
3 NO contact

Setting ranges

B

12.5 ... 200 mbar
A
B

25 ... 220 mbar
A

120 ... 2200 mbar
AB1000 ... 6000 mbar
AB

– 4 ... – 30 mbarA
B

– 15 ... – 80 mbar
AB– 30 ... – 150 mbar

– 50 ... – 600 mbar

– 100 ... – 900 mbar

AAA

2 ... 8 mbar
AB

6 ... 75 mbar
A

80 ... 2000 mbar
AB

B

B

B

12.5 ... 80 mbar
ABB

A Upper switching point (mbar)
B Distance between contacts

4/5

Pressure and flow

Huba Control Type 620/625 | Technical data subject to change | Edition 09/2020

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