PRESSURE SWITCH（HW3H）■Description of the model designation
Size 025

ＨＷ３ＨｰPｰ１1（Ｓ）ｰ０２５Ｂｰ（ＤＣＫ）

Micro Switch
Electric Rating

For light loadapplications

For general loadapplications

DC 5 V to 30 V
1 to 100 mA

DC 5 V to 30 V
0.1 to 4 A

Micro switch electric rating
No code: For general load applications
K: For light load application
Voltage
No code: AC DC: DC
Nominal size
Pressure adjustment handle
No code: Without dial
S: With dial
Pressure adjustment range
0: 0.7 to 2.0 MPa
1: 1.0 to 7.0 MPa
2: 3.5 to 14 MPa
3: 10 to 25 MPa
Control port
P: P port A: A port B: B port

Size 03

ＨＷ３Ｈｰ１1（Ｓ）ｰ０３ｰ（ＤＣ）〔Ａ〕■Symbols
For P port control

For A port control

For B port control

P1 R1 B1 A1

P1 R1

B1 A1

P1 R1

B1 A1

PPB

P

B

R

B

A

R

A

R

A

■Specifications
Sixe 025
Controlled port

P
A
B

Max. operating pressure(MPa)ModelRated flow rate
(L/min)Max. flow rate
(L/min)HW3HｰPｰ1*ｰ025B（ｰDC*）

Pressure adjustment range(MPa)* symbol

HW3HｰPｰ1*Sｰ025B（ｰDC*）

0: 0.7 to 2HW3HｰAｰ1*ｰ025B（ｰDC*）25

HW3HｰAｰ1*Sｰ025B（ｰDC*）

2040

1: 1to 7

2: 3.5 to 14

HW3HｰBｰ1*ｰ025B（ｰDC*）

3: 10 to 25

HW3HｰBｰ1*Sｰ025B（ｰDC*）

NOTE: When operating with DC power, specify the micro switch code at the end of model designation as indicated below.
For general load application: “-DC”
For light load application:“-DCK”

Size 03
Controlled portPA
B

ModelMax. operating pressure(MPa)

Rated flow rate
(L/min)Max. flow rate
(L/min)Pressure adjustment range(MPa)80* symbol
0: 0.7 to 2
1: 1.5 to 5.5
2: 5 to 9.5
3: 9 to 15.5
4: 15 to 21

HW3Hｰ1*ｰ03（ｰDC）
HW3Hｰ1*Sｰ03（ｰDC）
HW3Hｰ1*ｰ03（ｰDC）〔A〕

21

HW3Hｰ1*Sｰ03
（ｰDC）
〔A〕
HW3Hｰ1*ｰ03（ｰDC）〔B〕
HW3Hｰ1*Sｰ03
（ｰDC）
〔B〕

40

■Operating voltage range (Common To Size 025 And 03)
AC（V）

100 to 240

DC（V）

12 to 24

NOTE 1: Do not use HW3H-*-1*(S)-025B-DC (for general load application) and HW3H-1*(S)-03-DC (*) witha small current. This will cause contact failure.
NOTE 2: For cable connection, use a sealed connector and tighten the mounting screws of the plastic
cover with a torque of approximately 1 N·m. If the sealing is imperfect, silicon gas in theatmosphere will enter the pressure switch, causing contact failure of the micro switch.
NOTE 3: To ensure high contact reliability, secure a pressure difference of at least 0.5 MPa between thesource pressure and the setting pressure.

D−43

HY-TEGRA SYSTEM

Control port
No code: P port A: A port
B: B port
Voltage
No code: AC DC: DCNominal size
Pressure adjustment handle
No code: Without dial
S: With dial
Pressure adjustment range
0: 0.7 to 2.0 MPa
1: 1.5 to 5.5 MPa
2: 5.0 to 9.5 MPa
3: 9.0 to 15.5 MPa
4: 15 to 21 MPa

D■Outside dimensions
HW3HｰPｰ1*ｰ025B（ｰDC*）
HW3HｰAｰ1*ｰ025B（ｰDC*）
HW3HｰBｰ1*ｰ025B（ｰDC*）

4−φ5.5Lock nut

O-ring 4ーJIS B2401ー1AP922.5

1645
31.75
7310.75
25.9
15.5
5.1

17.5

Wiring hole G1/2

18

12.7
21.5
30.2
13.5
40.5
63

D3588
218 Max.

Pressure adjustment screw
CW: Increases pressure.

67 Max.

HW3HｰPｰ1*Sｰ025B（ｰDC*）
HW3HｰAｰ1*Sｰ025B（ｰDC*）
HW3HｰBｰ1*Sｰ025B（ｰDC*）

4−φ5.5O-ring 4ーJIS B2401ー1AP9
22.5

45
31.75
731
0.75
25.9
15.5
5.1

16

17.5

Wiring hole G1/2

18

12.7
21.5
30.2
13.5
40.5
6335

88237 Max.

Pressure adjustment dial
CCW: Increases pressure.

86 Max.

Mass: 1.26㎏

HW3Hｰ1*（S）ｰ03（ｰDC）（*）

Pressure adjustment screw
CW: Increases pressure.

If the scale is provided.

6883
1846
32.5
21.4
6.4O-ring 5ーJIS B2401ー1BP1236

HY-TEGRA SYSTEM

Mass: 1.20㎏

2055
Wiring hole G1/2

2−φ5.5
Mounting hole 4−φ8.5
101870

3.2
16.7
27
37.3
50.8
54
65
107251 Max.

1435
Rc1/4
Pressure gauge outlet(Ordinary fill plug)

Pressure adjustment
screw
CW: Increases pressure.

35

Lock nut

6266
255

Mass: 4.5㎏

D−44