1
Catalog 1308242
Issued 3-03 (PDF Rev. 12-08)
Revised 12-08
www.tycoelectronics.com
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080208
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
Time vs. Current Trip Curve @ +25°C
W58 series
P&B Push To Reset Only
Thermal Circuit Breaker
Load Current As A Percent
Of Breaker Rating
Time In Seconds
1000
900
800
700
600
500
400
300
200
100
0
.1 1 10 100 1000
(A)
(B)
(A) All 5-30 Amp Models (B) All 1-4 Amp Models
Overload Trip Times
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.
Overload Trip Times
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.
Ambient Compensation Chart
–20 –100 102030405060
1.40
1.30
1.20
1.10
1.00
0.90
0.80
0.70
0.60
Correction Factor
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 30 amp ratings.
• Cannot be manually tripped.
• Button extends for visual trip indication.
• Push button to reset breaker.
• Termination is screw or .250” QC.
• Bottom marked amperage rating optionally available.
Agency Approvals
W58 Series is UL 1077 Recognized as Supplementary Protectors, File
E69543 and meets Ignition Protection requirements in accordance
with UL 1500. W58 Series is also 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 confirm the product meets the
requirements for a given application.
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 amp model not UL or CSA.
Resettable Overload Capacity: Ten times rated current.
Maximum Resistance vs. Current Rating @ +25°C
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).
Current Maximum Current Maximum
Rating Resistance Rating Resistance
in Amps in Ohms in Amps in Ohms
0.5 5.0 8 0.020
1 1.35 9 0.020
2 0.32 10 0.014
3 0.18 12 0.010
4 0.10 15 0.010
5 0.026 20 0.005
6 0.026 25 0.006
7 0.020 30* 0.004
*No UL/CSA
2
Catalog 1308242
Issued 3-03 (PDF Rev. 12-08)
Revised 12-08
www.tycoelectronics.com
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080208
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
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
Stock Items – Authorized distributors are more likely to stock the following items.
Outline Dimensions
Ordering Information
Typical Part No. > W58-XB1A4A-5
1. Designator:
W = Circuit breaker
2. Series Number:
58 = Single Pole, Push-to-Reset
3. Circuit Function:
X = Series Trip
4. Button and Rate Marking:
A = White, plain, no rate marking, no trip band E = White with red rate marking no trip band
B = White with red rate marking, red trip band F = White with black rate marking, no trip band
C = White with black rate marking, red trip band K = Black, plain, no rate marking, red trip band
Note: Rate marking on the bottom of the case is available on a special order basis. Consult factory for details.
5. Mounting Bushing:
1 = Metal, 7/16” x .500” (12.70mm) long 7 = Plastic, 3/8” x .465” (11.81mm) long, round
4 = Metal, 15/32” x .300” (7.62mm) long, black
6 = Metal, 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 = Metal, knurled nut/hex nut 22 = Plastic knurled nut, metal lock washer
6 = Metal, knurled nut/hex nut/lock washer
12 = Metal, knurled nut/lock washer
15 = Metal, two hex nuts/lock washer
18 = Metal, hex nut/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 9 15 30*
1471020
2581225 *Not UL or CSA
.440
(11.18)
1.375
(34.93)
.425
(10.80)
.850
(21.59)
SEE TERMINAL DRAWINGS
FOR DETAIL
.312±.005
(7.92±.13)
.050 MAX.
(1.27)
CLOSED POSITION
BUTTON
1.375
(34.93) 15
.660
(16.76)
SEE MOUNTING
BUSHING AND
MOUNTING HARDWARE DRAWINGS FOR DETAIL
.281 MAX.
(7.14)
OPEN POSITION
CODES 1 & 4
.250
(6.35)
CODE 6
.312 TYP.
(7.92)
.85
(21.6)
.156
(3.96)
.187
(4.75)
#6-32 SCREW
& LOCK WASHER ASSEMBLY
1.375
(34.93)
.440
(11.18)
.850
(21.59)
.425
(10.80)
.415
(10.54)
.250 (6.35) x .032 (.81)
QUICK CONNECT TERMINALS
A
C & D
Terminal Options
3
Catalog 1308242
Issued 3-03 (PDF Rev. 12-08)
Revised 12-08
www.tycoelectronics.com
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Dimensions are shown for reference
purposes only. Specifications and
availability subject to change.
South America: 55-11-2103-6000
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-8706-080208
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-1106-0803
Mounting Metal Plastic Metal Metal
Bushing Knurled Knurled Hex Lock
Code Nut Nut Nut Washer
1 55-010A – 55-011A 88-021B
4 • – 55-001B 88-002A
6 55-008A – 55-001D 88-006K
7 55-008A 1423696-2 55-001D 88-006K
Mounting Hardware
B
AFLAT A
B
STRAIGHT KNURL
24 PITCH
ALTERNATE TEETH TWISTED
IN OPPOSITE DIRECTIONS
B
A
.440 - .450 DIA.
(11.2 - 11.4)
7/16-28 THREAD
(SILVER)
15/32-32 THREAD
(BLACK)
.300
(7.62)
.465
(11.81)
3/8-24 THREAD
(SILVER)
Recommended Cutout
.470 - .480 DIA.
(11.9 - 12.2)
.370 - .380 DIA.
(9.4 - 9.7)
.465
(11.81)
3/8-24 THREAD
(BLACK)
.370 - .380 DIA.
(9.4 - 9.7)
Mounting Hardware Dimensions
Mounting Hardware Ordering Information
Mounting Bushing
• 55-010B (silver) 55-010E (black)
Hex Nut Knurled Nut Lockwasher
Type 1
Type 4
Type 6
Metal Metal Plastic Metal
Dimension Hex Nut Knurled Nut Knurled Nut Lockwasher
3/8” .556 (14.12) .562 (14.27) .74 (18.8) .562 (14.27)
A. 7/16” .625 (15.88) .625 (15.88) – .540 (13.72)
15/32” .556 (14.12) .625 (15.88) – .600 (15.24)
3/8” .085 (2.16) .078 (1.98) .126 (3.2) .018 (.457)
B. 7/16” .111 (2.82) .125 (3.18) – .022 (.559)
15/32” .078 (1.98) .125 (3.18) – .018 (.457)
Type 7
Optional Protective Boot
Silicone rubber boot is bonded to integral alumimum nut.
1-1423696-5
Black boot for W58 with 3/8”-24
bushing.
.63 DIA.
(16.0)
.622
(15.8)
Optional Bottom Marking of Rating
This is available on a special order basis. Consult factory for details.
© 2008 by Tyco Electronics Corporation. All Rights Reserved.
P&B, TE logo and Tyco Electronics are trademarks.
