W23/31 Toggle or Pusl/Pull Actuator Thermal Circuit0 pages

Catalog 1308242
Issued 3-03 (PDF Rev. 12-08)

W23/W31 series
Toggle or
Push/Pull Actuator
Thermal P&B Circuit Breaker

W23

W31

Maximum Resistance vs. Current Rating @ +25°C

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.

Current
Rating
in Amps

Maximum
Resistance
in Ohms ± 30%

1
5
10
15
20
30
40
50

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.

.61
.03
.01
.006
.004
.003
.002
.002

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

Mechanical/Environmental Data

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.

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).

Time Vs. Current Trip Curve @ +25°C

Ambient Compensation Chart
1.40

1000
900

Load Current As A Percent
Of Breaker Rating

800

Overload

100%
135%
200%
400%
600%
800%
1000%

(A)

700
600

(B) All 0.5-4 Amp Models

Trip Times

Overload

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.

100%
135%
200%
400%
600%
800%
1000%

1.30

Trip Times

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.

500

Correction Factor

(A) All 5-50 Amp Models

(B)

400

1.20
1.10
1.00
0.90
0.80
0.70

300

0.60
–20 –10 0

200

10 20 30 40 50 60

Ambient Temperature In Degrees Centigrade (°C)

100
0
.1

1

10

Time In Seconds

Dimensions are shown for

116 reference purposes only.

Dimensions are in inches over
(millimeters) unless otherwise
specified.

100

1000

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.

Specifications and availability
subject to change.

www.tycoelectronics.com
Technical support:
Refer to inside back cover.