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Dimensions

Range 

= 0-4 in. (0-10 cm)
10 = 0-10 in. (0-25 cm)
20 = 0-20 in. (0-51 cm)
30 = 0-30 in. (0-76 cm)
50 = 0-50 in. (0-127 cm)

Base Model

20PWC
20PWCG 

(Gage-only, no contacts)

25PWC

*

25PWCG 

(Gage-only, no contacts)

*

A25PWC

*

A25PWCG

(Gage-only, no contacts)

*

*

25 Series and A25 Series available in 0-30 in. 

(0-76 cm) and 0-50 (0-127 cm) ranges only.

Options

B1 = Black bezel; low profile
B2 = Bezel; raised profile (was “HP”)
B3 = Black bezel; raised profile (was “HBB”)
EX = Explosion-proof
EL = Explosion-proof, less case
= High contact only (as optional)

Options not available on all models or configurations.

How to Order

To order, use the diagram below. NOTE: List options in ascending alphabetical order (A-Z). Example: 20PWC-H-10.

_____  –  _____  –  _____

A

D

C

1/16 Hex for Limit Switch 
Contact Adjustment

Limit Switch
Contact

Contact

Pointer

Mounting 

Clamp

Contact Wiring (SWICHGAGE

®

 models only)

• 20PWC Series: #6 one-point terminal block
• 25PWC Series: 18 AWG x 12 in. 

(1.0 mm

2

 x 305 mm)

• A25PWC Series: #6 terminal block

1/8-27 NPTM
Connection

Mounting Hole

B

Contact Rating: 2 Amps @ 30 VAC/DC.

20PWC and 25PWC are case ground.

A25PWC is isolated ground.

HL = High and low contacts (as optional)
= Illumination
= Screwdriver adjustable face contact
= Knob adjusting face contact
RP = Red tipped pointer
TP = Tamperproof contact

20PWC Series

25PWC Series

A25PWC Series

A

2-7/32 (56)

2-1/8 (54)

1-51/64 (46)

B

1-5/16 (33)

1-3/8 (35)

1-27/64 (36)

C

2-15/64 (57)

3-1/8 (79)

2-29/32 (74)

D

2-1/16 (52)

2-11/16 (68)

2-11/16 (68)

NOTE: Dimensions are in inches and (millimeters).

Internal Wiring

Printed in U.S.A.

®

FRANK W.

MFR.

■ 

Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA
tel. (918) 627-3550  fax (918) 664-6146 
e-mail [email protected] 

■ 

Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA
tel. (281) 342-0297  fax (281) 341-6006 
e-mail [email protected]

Since 1939

■ 

Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.
tel. +44 1722 410055  fax +44 1722 410088  tlx 477088
e-mail [email protected]

■ 

Frank W. Murphy Pte., Ltd.

26 Siglap Drive; Republic of Singapore 456153
tel. +65 241-3166 fax +65 241-8382 
e-mail [email protected]

■ 

Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia
tel. +61 3 9358-5555  fax +61 3 9358-5558

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

■ 

Murphy de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje 
San Luis Potosí, S.L.P.; México 78384 
tel. +52-48-206264  fax +52-48-206336
e-mail [email protected]

■ 

Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA
tel. (805) 272-4700  fax (805) 947-7570
e-mail [email protected]

■ 

Frank W. Murphy France

tel. +33 1 30 762626  fax +33 1 30 763989

PHASED-OUT

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