116

Dimensions are shown for

reference purposes only.

Dimensions are in inches over

(millimeters) unless otherwise

specified.

Catalog 1308242

Issued 3-03 (PDF Rev. 12-08)

Specifications and availability

subject to change.

www.tycoelectronics.com

Technical support:

Refer to inside back cover.

Time In Seconds

(A)

(B)

(A) All 5-50 Amp Models

(B) All 0.5-4 Amp Models

Overload

Trip Times

100%

135%

200%

400%

600%

800%

1000%

No Trip

Trip in 1 hour

6.0-22 Sec.

1.0-3.0 Sec.

0.45-1.5 Sec.

0.3-0.8 Sec.

0.25-0.6 Sec.

Overload

Trip Times

100%

135%

200%

400%

600%

800%

1000%

No Trip

Trip in 1 hour

11-30 Sec.

2.0-8.0 Sec.

1.0-5.5 Sec.

0.6-4.0 Sec.

0.4-2.5 Sec.

1000

900

800

700

600

500

400

300

200

100

0

.1

1

10

100

1000

Toggle or

Push/Pull Actuator

Thermal P&B Circuit Breaker

Time Vs. Current Trip Curve @ +25°C

W23

W31

Ambient Compensation Chart

–20 –10

0

102030405060

1.40

1.30

1.20

1.10

1.00

0.90

0.80

0.70

0.60

Ambient Temperature In Degrees Centigrade (°C)

To use this chart: Read up from the ambient

temperature to the curve, and across to find a correction

factor. Multiply the breaker rating by the correction factor

to determine the compensated rating. Calculate the

overloads in terms of the compensated rating to use the

published trip curve.

Features

• 0.5 amp to 50 amp ratings may be used as on/off switch.

• Cannot be reset against overload.

• W23 has visible trip indicator band.

• Screw termination.

• Trip-free operation.

Agency Approvals

W23 and W31 are UL 1077 Recognized as Supplementary Protectors.

File E69543, and CSA Accepted as Supplementary Protectors

(Appliance Component Protectors), File LR15734.

Users should thoroughly review the technical data before selecting a product part

number. It is recommended that users also seek out the pertinent approvals files of

the agencies/laboratories and review them to ensure the product meets the

requirements for a given application.

Electrical Data @ +25°C

Calibration: Will continuously carry 100% of rating, may trip between

101% and 134% of rating at 25°C. Must trip at 135% in

one hour.

Maximum Operating Voltages: 50VDC or 240VAC (to 400 Hz).

Interrupting Capacity:

With 4X Max. Series Fuse Protection

0.5-50 amp models — 1000 amps at 240VAC.

30-50 amp models — 1000 amps at 50VDC.

Without 4X Max. Series Fuse Protection

0.5-25 amp models — 2000 amps at 50VDC.

10-20 amp models — 2000 amps at 120VAC.

Resettable Overload Capacity: Ten times rated current.

Dielectric Strength: Over 1,500 volts RMS.

Mechanical/Environmental Data

Endurance Cycling: More than 6,000 cycles at 100% of rating, or 10,000

mechanical cycles.

Humidity: Will meet requirements of MIL-STD-202, Method 106.

Salt Spray: Will meet requirements of MIL-STD-202, Method 101, Test

Condition B.

Termination: Two #8-32 screw terminals.

Mounting: W23 — Threaded bushing, 3/8” (9.53mm) diameter.

W31 — Threaded bushing, 15/32” (11.91mm) diameter, with or

without anti-rotation flats.

Weight: Less than 2 oz. (57g).

Current

Maximum

Rating

Resistance

in Amps

in Ohms ± 30%

1

.61

5

.03

10

.01

15

.006

20

.004

30

.003

40

.002

50

.002

Maximum Resistance vs. Current Rating @ +25°C