W23/W31
series
Toggle or
Push/Pull Actuator
Thermal Circuit Breaker
W23
W31
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.
• Screw termination.
• Trip-free operation.
Current
Rating
in Amps
1
5
10
15
20
30
40
50
Maximum
Resistance
in Ohms ± 30%
.61
.03
.01
.006
.004
.003
.002
.002
Agency Approvals
W23 and W31 are UL 1077 Recognized as Supplementary Protectors.
File E69543, and CSA Certified as Appliance Component Protectors,
File LR15734.
Mechanical/Environmental Data
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 250VAC (to 400 Hz).
Interrupting Capacity:
0.5-25 amp models — 2,500 amps at 50VDC,
1000 amps at 250VAC. 26-50 amp models — 1000
amps at 50VDC or 250VAC.
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
1000
(A) All 5-50 Amp Models
(B) All 0.5-4 Amp Models
Overload
Trip Times
Ambient Compensation Chart
1.40
Overload
Trip Times
900
800
(A)
1.30
Correction Factor
1.20
1.10
1.00
0.90
0.80
0.70
0.60
–20 –10 0
10 20 30 40 50 60
Ambient Temperature In Degrees Centigrade (°C)
Load Current As A Percent
Of Breaker Rating
700
600
500
400
300
200
100
0
.1
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.
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.
(B)
1
10
100
1000
Time In Seconds
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.
Ordering Information
Typical Part No.
1. Designator:
W = Circuit breaker
2. Series Number:
23 = Single pole, push/pull
3. Circuit Function:
X = Series trip
4. Button:
1 = Black with white amp rate marking and white trip band.
5. Mounting Bushing:
A = 3/8”-24 threaded bushing .375” (9.53mm) long, silver color
6. Terminals (See drawings for relative terminal positions):
1 = Screw terminals situated 90° to each other with #8-32 screws and washers installed.
3 = Screw terminals situtated parallel to each other pointing upward with #8-32 screws and washers installed.
7. Mounting Hardware:
A = Knurled nut/hex nut installed
G = Two hex nuts/lockwasher installed
Z = No mounting hardware supplied
8. Amp Rating:
0.5
3
1
4
2
5
7
.5
10
15
20
25
30
35
40
50
BW
23
-X
1
A
1
G
-5
Stock Items – The following items are normally maintained in stock for immediate delivery.
W23-X1A1G-1
W23-X1A1G-2
W23-X1A1G-3
W23-X1A1G-5
W23-X1A1G-7
.50
W23-X1A1G-10
W23-X1A1G-15
W23-X1A1G-20
W23-X1A1G-25
W23-X1A1G-30
W23-X1A1G-35
W23-X1A1G-40
W23-X1A1G-50
Ordering Information
Typical Part No.
1. Designator:
W = Circuit breaker
2. Series Number:
31 = Single pole, toggle actuator
3. Circuit Function:
X = Series trip
4. Mounting Bushing:
1 = 15/32”-32 threaded bushing .320” (8.13mm) long, round, silver color
2 = 15/32”-32 threaded bushing .320” (8.13mm) long, double “D” silver color
,
5. Toggle:
M = Silver color metal toggle, round, with amp rate marking on end
6. Terminals (See drawing for relative terminal positions):
1 = Screw terminals situated 90° to each other with #8-32 screws and washers installed.
5 = Screw terminals situated parallel to each other pointing downward with #8-32 screws and washers installed.
7. Mounting Hardware:
A = Knurled nut/hex nut intalled
G = Two hex nuts/lockwasher installed
Z = No mounting hardware supplied
8. Amp Rating:
0.5
3
1
4
2
5
7
.5
10
15
20
25
30
35
40
50
BW
31
-X
2
M
1
G
-5
Stock Items – The following items are normally maintained in stock for immediate delivery.
W31-X2M1G-1
W31-X2M1G-2
W31-X2M1G-3
W31-X2M1G-5
W31-X2M1G-7
.50
W31-X2M1G-10
W31-X2M1G-15
W31-X2M1G-20
W31-X2M1G-25
W31-X2M1G-30
W31-X2M1G-35
W31-X2M1G-40
W31-X2M1G-50
W23 Outline Dimensions
Terminal Style 1
RESET BUTTON IN “ON” POSITION
WHITE INDICATOR NOT VISIBLE
AMP RATING
.250
(6.35)
#8-32 SCREWS
WITH WASHERS
45°
Terminal Style 3
.046
(1.17)
.690
(17.53)
3/8-24 THREADED BUSHING
45°
.56
(14.2)
.56
(14.22)
0.9
(2.29)
5
1.384
(35.15)
.315 Dia.
(8.00)
.388
(9.86)
.570
(14.48)
1.600
(40.64)
.03 MAX.
(.76)
.46
(11.7)
1.890
(48.01)
Mounting Hardware
Hex Nut
(55-001D - Silver Color)
Lockwasher
(88-006B - Silver Color)
2.035
(51.69)
.046
(1.17)
inches
All dimensions are given as (mm)
Knurled Nut
(55-008A - Silver Color)
Suggested Mounting Holes
ALTERNATE TEETH TWISTED
IN OPPOSITE DIRECTIONS
STRAIGHT KNURL
.562
(14.27)
.562
(14.27)
.375-.386
(9.53-9.80)
.545 – .567
(13.84 – 14.40)
.085
(2.16)
.018
(.46)
.078
(1.98)
W31 Outline Dimensions
Terminal Style 1
.690
(17.53)
.03 MAX
(.76)
15/32-32 THREADED BUSHING
#8-32 SCREWS
WITH WASHERS
Terminal Style 5
AMP RATING
“ON”
POSITION
45°
.46
(11.7)
.56
(14.2)
.09
(2.3)
5
1.384
(35.15)
30°
REF.
.335
(8.51)
.625
(15.88)
1.600
(40.64)
2.035
(51.69)
.56
(14.2)
45°
.380
(9.65)
ANTI-ROTATION
FLATS
“OFF”
POSITION
.046
(1.17)
.046
(1.17)
Mounting Hardware
Hex Nut
(55-001B - Silver Color)
Lockwasher
(88-002B - Silver Color)
ALTERNATE TEETH TWISTED
IN OPPOSITE DIRECTIONS
Suggested Mounting Holes
Knurled Nut
(55-010B - Silver Color)
STRAIGHT KNURL
.600
(15.24)
.635
(16.13)
.470
(11.94)
.470
(11.94)
.545 – .567
(13.84 – 14.40)
.078
(1.98)
.018
(.46)
.125
(3.18)
.385
(9.78)
Tyco Electronics Corporation - P&B, Winston-Salem, NC 27102
Technical Support Center: 1-800-522-6752, www.pandbrelays.com
Specifications and availability subject to change without notice.
13C9230
Printed in U.S.A.
IH/3-00
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