Catalog 1308242
Issued 3-03 (PDF Rev. 8-04)
P&B
W58
series
Push To Reset Only
Thermal Circuit Breaker
Features
• 0.5 amp to 30 amp ratings.
• Cannot be manually tripped.
• Button extends for visual trip indication.
• Push button to reset breaker.
• Termination is screw or .250” QC.
Maximum Resistance vs. Current Rating @ +25°C
Current
Rating
in Amps
0.5
1
2
3
4
5
6
7
*No UL/CSA
Agency Approvals
W58 Series is UL 1077 Recognized as Supplementary Protectors, File
E69543, and CSA Certified as 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.
Maximum
Resistance
in Ohms
5.0
1.35
0.32
0.18
0.10
0.026
0.026
0.020
Current
Rating
in Amps
8
9
10
12
15
20
25
30*
Maximum
Resistance
in Ohms
0.020
0.020
0.014
0.010
0.010
0.005
0.006
0.004
Electrical Data @ +25°C
Calibration:
Breaker will continuously carry 100% of rated load. It may trip
between 101% and 145% of rated load, but must trip at
145% at 25°C.
Dielectric Strength:
Over 1,500 volts RMS.
Maximum Operating Voltages:
50VDC; 250VAC.
Interrupt Capacity:
2,000 amps at 50VDC (0.5 - 30 amp models).
1,000 amps at 250VAC (0.5 - 30 amp models).
Note:
30 0amp model not UL or CSA
.
Resettable Overload Capacity:
Ten times rated current.
Mechanical/Environmental Data
Shock:
Withstands to 10g.
Endurance Cycling:
Over 1,000 cycles at 200% of rated load.
Vibration:
Withstands to 10g at 10-55 Hz.
Weight:
Less than 1 1/2 oz. (42.5g).
Time vs. Current Trip Curve @ +25°C
1000
(A) All 5-30 Amp Models
(B) All 1-4 Amp Models
Overload
Trip Times
Ambient Compensation Chart
1.40
1.30
Overload
Trip Times
900
800
(A)
Load Current As A Percent
Of Breaker Rating
Correction Factor
700
600
500
400
300
200
100%
145%
200%
400%
600%
800%
1000%
No Trip
Trip in 1 hour
6.0-30 Sec.
1.6-4.5 Sec.
0.60-1.7 Sec.
0.25-0.90 Sec.
0.15-0.65 Sec.
100%
145%
200%
400%
600%
800%
1000%
No Trip
Trip in 1 hour
10-45 Sec.
3.0-14.0 Sec.
1.4-7.0 Sec.
0.75-4.3 Sec.
0.50-3.4 Sec.
1.20
1.10
1.00
0.90
0.80
0.70
0.60
–20 –10
0
10 20 30 40 50 60
(B)
Ambient Temperature In Degrees Centigrade (°C)
100
0
.1
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.
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
107
Catalog 1308242
Issued 3-03 (PDF Rev. 8-04)
P&B
Ordering Information
Typical Part No.
1. Designator:
W = Circuit breaker
2. Series Number:
58 = Single Pole, Push-to-Reset
3. Circuit Function:
X = Series Trip
4. Button:
A = White, plain, no rate marking, no trip band
B = White with red rate marking, red trip band
C = White with black rate marking, red trip band
5. Mounting Bushing:
1 = 7/16” x .500” (12.70mm) long
4 = 15/32” x .300” (7
.62mm) long, black
6 = 3/8” x .465” (11.81mm) long, round
6. Terminals:
A = Quick connect .250” (6.35mm) straight
C = 6/32 screw 90° (screws installed)
D = 6/32 screw 90° (screws bulk packed)
7. Mounting Hardware:
4 = Knurled nut/hex nut
6 = Knurled nut/hex nut/lock washer
12 = Knurled nut/lock washer
E = White with red rate marking no trip band
F = White with black rate marking, no trip band
B
W
58
-X
B
1
A
4
A
-5
15 = Two hex nuts/lock washer
99 = No mtg. hardware supplied (Use C, Step #8)
Note:
For other hardware combinations, order separately. See mounting hardware Ordering Information table.
8. Mounting Hardware Packaging:
A = Assembled to bushing
B = Bulk unassembled
C = No mounting hardware
9. Specify Amp Rating:
0.5
3
6
1
4
7
2
5
8
9
10
12
15
20
25
30*
*Not UL or CSA
Stock Items – Authorized distributors are more likely to stock the following items.
W58-XB1A4A-1
W58-XB1A4A-2
W58-XB1A4A-3
W58-XB1A4A-4
W58-XB1A4A-5
W58-XB1A4A-6
W58-XB1A4A-7
W58-XB1A4A-8
W58-XB1A4A-10
W58-XB1A4A-12
W58-XB1A4A-15
W58-XB1A4A-20
W58-XB1A4A-25
W58-XB1A4A-30
W58-XC4C12A-1
W58-XC4C12A-2
W58-XC4C12A-3
W58-XC4C12A-5
W58-XC4C12A-7
W58-XC4C12A-10
W58-XC4C12A-15
W58-XC4C12A-20
W58-XC4C12A-25
W58-XC4C12A-30
Outline Dimensions
Terminal Options
.050 MAX.
(1.27)
CLOSED POSITION
CODES 1 & 4
.312±.005
(7.92±.13)
1.375
(34.93)
15
1.375
(34.93)
.425
(10.80)
.850
(21.59)
.250 (6.35) x .032 (.81)
QUICK CONNECT TERMINALS
.415
(10.54)
.440
(11.18)
1.375
(34.93)
.425
.850 (10.80)
(21.59)
.250
(6.35)
CODE 6
SEE TERMINAL DRAWINGS
SEE MOUNTING
FOR DETAIL
BUSHING AND
MOUNTING HARDWARE DRAWINGS FOR DETAIL
.281 MAX.
(7.14)
OPEN POSITION
BUTTON
A
.187
(4.75)
.440
(11.18)
.660
(16.76)
.312 TYP.
(7.92)
C&D
.156
.85
(3.96)
(21.6)
#6-32 SCREW
& LOCK WASHER ASSEMBLY
Dimensions are shown for
108
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
Catalog 1308242
Issued 3-03 (PDF Rev. 8-04)
P&B
Pal Nut
ALTERNATE TEETH TWISTED
IN OPPOSITE DIRECTIONS
Mounting Hardware
Disc
Hex Nut
Knurled Nut
Lockwasher
BLACK ETCHED LETTERS
.078 (1.98) HIGH, BOLD FACE
CIR
IT
BREAK
CU
ER
A
FLAT
A
STRAIGHT KNURL
24 PITCH
A
ES
S
TO
RES
ET
Mounting Bushing
Type 1
Recommended Cutout
7/16-28 THREAD
(SILVER)
Type 4
.300
(7.62)
.470 - .480 DIA.
(18.5 - 18.9)
15/32-32 THREAD
(BLACK)
Type 6
.465
(11.81)
.370 - .380 DIA.
(15.0 - 15.3)
3/8-24 THREAD
(SILVER)
Dimensions are shown for
reference purposes only.
PR
.937
(23.80)
.013
(.33)
B
B
B
A
B
Mounting Hardware Dimensions
Dim.
3/8”
.440 - .450 DIA.
(17.3 - 17.7)
Hex.
.556
.625
.556
.085
.111
.078
Knurled
.562
.625
.625
.078
.125
.125
L/W
.562
.540
.600
.018
.022
.018
Pal
.562
.625
.625
.140
.111
.090
A.
7/16”
15/32”
3/8”
B.
7/16”
15/32”
Mounting Hardware Ordering Information
Mounting
Bushing
Code
1
4
6
Knurl
Nut
55-010A
•
55-008A
Hex
Nut
55-011A
55-001B
55-001D
Pal
Nut
16S086B
16S086C
16S086A
Push to
Reset
Disc
33-012A
33-012C
33-012B
Washer
88-021B
88-002A
88-006K
• 55-010B (silver) 55-010E (black)
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
109
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