English
Language : 

2-1423673-3 Datasheet, PDF (2/2 Pages) Tyco Electronics – Rocker-Actuated Thermal Circuit Breaker/Power Switch With Optional Indicator Lamp
Ordering Information
Catalog 1308242
Issued 3-03 (PDF Revised 4-07)
P&B
B Typical Part No.
W 51 -A 1
2
1
B
1 -5
1. Designator:
W = Circuit breaker
2. Series Number:
51 = Switchable, Single Pole, Rocker-Actuated Thermal Model
3. Terminals:
A = Quick connect .250” (6.35mm) straight
C = Printed Circuit - right angle
4. Breaker Style & Base Color:
1 = Angular button design (see drawing below), black base color
B = Countoured button design (see drawing below), black base color
5. Rocker Color:
1 = Amber (translucent)
2 = Red (translucent)
3 = Green (translucent)
4 = White (opaque - for use on non-illuminated models)
5 = Black (opaque - for use on non-illuminated models)
6 = Red (opaque - for use on non-illuminated models)
7 = Gray (opaque - for use on non-illuminated models)
8 = Black (opaque) with red (translucent) indicator (only available on model with contoured button)
9 = Black (opaque) with green (translucent) indicator (only available on model with contoured button)
6. Maximum Operating Voltage (AC):
1 = 125VAC
2 = 250VAC
7. Light:
A = Non-illuminated
B = Illuminated
8. Marking option:
0 = No marking
1 = RESET/OFF printed
2 = RESET/OFF molded (only available on model with contoured button)
9. Specify Amp Rating:
5
6
7
8
10
15
20
Our authorized distributors are more likely to stock the following items for immediate delivery.
W51-A121B1-5
W51-A121B1-10
W51-A121B1-15
W51-A121B1-20
W51-A122B1-5
W51-A122B1-10
W51-A122B1-15
W51-A122B1-20
W51-A152A1-5
W51-A152A1-10
W51-A152A1-15
W51-A152A1-20
ORDERING NOTE: Some options illustrated below are not listed in the “Ordering Information” chart above. Options denoted by “Special” or “Special Order” in their
descriptions are only offered on a special order basis. Other base and button colors and intermediate amp ratings are also available on a special order
basis. All special order items are subject to extended leadtimes and significant minimum order quantities. Your Tyco Electronics sales engineer must
consult with the factory before providing price and availability information regarding items with these options.
Case Styles
Marking Options
For Angular Button Design
(Printed)
For Contoured
Button Design
(Molded)
Angular Button
Design
Contoured Button
Design
Terminal Types
.374
(9.5)
.098 X .157
(2.5 x 4.0)
.25
(6.35)
.393
(10.0)
.205
(5.2)
.157 X .098
(4.0 x 2.5)
.25
(6.35)
.393
(10.0)
.298
(7.55)
TERMINAL THICKNESS .032
FOR ALL TYPES (.81)
.504
(12.8)
.601
(15.26)
.66
(16.76)
.250
(6.35)
.156
(3.95)
Standard –
.250 Quick Connect
Terminal
Special Order -
Solder
Terminal
Standard –
Right Angle PC
Terminal
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Standard -
RESET/OFF
Printed on
Bezel
Standard -
No Marking
Specifications and availability
subject to change.
Standard -
RESET/OFF
Molded into
bezel
www.tycoelectronics.com
Technical support:
113
Refer to inside back cover.