2

Catalog 1308242

Issued 3-03 (PDF Revised 3-09)

Revised 3-09

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

Our authorized distributors are more likely to stock the following items for immediate delivery.

Termination Options

.181

(4.6)

.181

(4.6)

.098 ± .01

(2.5 ± 0.3)

Option A

Standard

.250 QC

Straight

Option D

Special

.250 QC

45°

Option B

.250 QC

90°

Option E

.250

QC/PCB

270°

Option F

#8-32 Screw

45°

Option C

#8-32 Screw

90°

Ordering Information

Typical Part No.

>

W

54

-X

B

1A4A1

0

-5

1. Designator:

W = Circuit breaker

2. Series Number:

54 = Single pole, push-to-reset, thermal model

3. Circuit Function & Contact Material:

X = Series trip, silver-cadmium oxide contacts

F = Series trip, silver-tin oxide contacts †

†Not VDE

4. Button Color & Rate Marking:

A = White, plain, no rate marking

B = White with red rate marking (vertical)

C = White with black rate marking (vertical)

D = Black, plain, no rate marking

E = Black with white rate marking (horizontal)

F = White with red rate marking (horizontal)

G = White with black rate marking (horizontal)

H = Black with white rate marking (vertical)

I = Red, plain, no rate marking

J = Black, no rate marking on button, white rate marking

on bottom of case between terminals.

5. Mounting Bushing:

1 = Metal, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), round base

2 = Metal, 3/8” (single D) x 10mm long, 3/8”x24 threads, hex base

3 = Metal, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), hex base

4 = Metal, 10.5mm (double D) x 12.6mm long, M12x1 threads, (similar to 15/32”), round base

6 = Plastic, 9.8mm (double D) x 12.6mm long, M11x1 threads, (similar to 7/16”), round base

7 = Plastic, 3/8” (single D) x 10mm long, 3/8”x24 threads, hex base

8 = Plastic, snap-in type

Notes: Codes 1, 3 and 6 are similar in size to 7/16” bushings (not exact equivalent).

Code 4 is similar in size to a 15/32” bushing (not exact equivalent)

6. Terminals:

A = Quick connect .250” (6.35mm), straight

B = Quick connect .250” (6.35mm), bent 90°

C = #8-32 screw, bent 90° (screws installed) †

D = Quick connect .250” (6.35mm), bent 45°

E = Quick connect .250” (6.35mm), bent 90° opposite

F = #8-32 screw, bent 45° (screws installed)

G = QC .250” (6.35mm) and #8-32 screw, bent 90° (screw installed)

†Not VDE

7. Mounting Hardware:

4 = Metal, knurled nut/hex nut

7 = Plastic, knurled nut

6 = Metal, hex nut

8 = Plastic, knurled nut with small hole

12 = Metal, knurled nut

22 = Plastic knurled nut, metal lockwasher

15 = Metal, two hex nuts and one lockwasher

18 = Metal, one hex nut and one lockwasher

99 = None

8. Mounting Hardware Packaging:

A = Assembled to bushing

B = Bulk unassembled

C = No mounting hardware

9. Maximum Operating Voltage:

1 = 250VAC

2 = 125VAC / 50VDC

10. Nameplate:

0 = None

2 = Silver color printing on black

1 = Embossed aluminum

3 = Black printing on silver color

11. Specify Amp Rating:

5

7

10

15

25†

35*†‡

6

8

12

20

30†

40*†‡

*UL1077, but not UL1500

†Not VDE ‡Not CSA

12. UL Recognition:

Leave Blank = UL1077 recognized breaker

M = Model meeting Ignition Protection requirements in accordance with UL 1500, in addition to UL1077 recognition (not available with models >30A rating.)

Code M breakers are not VDE approved or CSA certified.

W54-XB1A4A10-5

W54-XB1A4A10-10

W54-XB1A4A10-15

W54-XB1A4A10-20

W54-XB1A4A10-25

W54-XB1A4A10-30

ORDERING NOTE:

Mounting hardware can be ordered separately. Some options are subject to extended leadtimes and significant minimum order quantities.

Option H

.250 QC Straight

with #8-32 Load

Term. Bent 90°