Specifications

CIRCUIT BREAKERS - TYPE I
Cycling - Automatic Reset
Single Pole Thermal Type Breakers
Rating From: 5A to 50A; 12VDC.
Operating Temperature: -10 F (-23°C) to 150°F
(65°C).
Storage Temperature: -20°F (-29°C) to 200°F
(93°C).
Applications: Battery charges, trucks, buses, RV's,
trolling motors, etc.
Approvals: Complies with
SAE Standard J553.
METAL COVER
54-220PL
54-520
54-520PL
42
54-120
54-120PL
54-220
90 Bracket
90 Bracket
Ampere
Rating
Plastic Base
12 VDC
Metal Base
12 VDC
10 54-110PL *
15 * 54-115
20 54-120PL 54-120
25 54-125PL 54-125
30 54-130PL 54-130
35 54-135PL *
40 * 54-140
50 54-150PL 54-150
* Currently not available No Mounting Bracket
Ampere
Rating
Plastic Base
12 VDC
Metal Base
12 VDC
15 54-215PL 54-215
20 54-220PL 54-220
25 * 54-225
30 54-230PL 54-230
30 54-831PL (Plastic 24 VDC)
40 54-240PL 54-240
50 54-250PL 54-250
* Currently not available 90 Mounting Bracket
Ampere
Rating
Plastic Base
12 VDC
Metal Base
12 VDC
10 54-510PL *
15 54-515PL 54-515
20 54-520PL 54-520
25 * 54-525
30 54-530PL 54-530
40 54-540PL 54-540
50 54-550PL 54-550
* Currently not available Straight Mounting Bracket
Straight Bracket
Typical Circuit Breaker Applications
Accessory Circuit, Cooling Fan, Door Locks,
Headlamps, Tail Lamps, Window Lift, Sunroof,
Trailering Package
Terminal Options – Battery Terminal
has yellow dichromate plating
Aux Terminal = Zinc Plating
PLASTIC COVER
NOTES: PLASTIC VS METAL
 VIBRATION…Plastic housings with mounting brackets are one
piece molded and are less prone to vibration. Metal housings with
brackets are two piece designs. The bracket is attached by spot
welding and can be loosened by vibration.
 SHORTING OUT…If a wire should loosen from a terminal on a
plastic housing version, it will not short out against the housing as it
may do with a metal housing.
 WEIGHT…The plastic housing is also lighter than the metal
housing.
NOTES: 24V VS 12V CIRCUIT BREAKERS
 A 24V Circuit Breaker may be used in a 12V application because of
the thermal metals used in assembly. However a 12V Circuit Breaker
in not recommended for 24V since the materials are Heat
affected…not current affected.
TWO 10-32 STUDS;
.66 (AUX & BAT)