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DIN-Rail Mount AC Branch Circuit Breakers
Use these circuit breakers upstream from small transformers, lighting, and control circuits. They meet UL 489 requirements for branch circuit protection. All are thermal/magnetic—breakers trip when heat is generated by sustained, low-level overload current, but will trip quickly when the magnetic field in the coil senses a high-current short circuit. Mount directly to DIN rail.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
Alarm (sold separately) sends an audible signal when the breaker is tripped.
For technical drawings and 3-D models, click on a part number.
| Voltage | Frequency, Hz | Breakthrough Current | For DIN Rail Size, mm | Wire Connection Type | Ht. | Wd. | Dp. | Temp. Range, °F | Features | Specifications Met | Current, A | Each | |
1 Pole—Toggle Style | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 277V AC | 50/60 | 10,000 A @ 277 V AC | 35 | Screw-Clamp Terminals | 4.13" | 0.7" | 2.36" | -4° to 140° | Time Delay Trip | UL 489, CSA Certified | 25 | 000000 | 000000 |
2 Pole—Toggle Style | |||||||||||||
| 277V AC/480YV AC | 50/60 | 10,000 A @ 277 V AC 10,000 A @ 480 V AC | 35 | Screw-Clamp Terminals | 4.13" | 1.39" | 2.36" | -4° to 140° | Time Delay Trip | UL 489, CSA Certified | 25 | 000000 | 000000 |
3 Pole—Toggle Style | |||||||||||||
| 277V AC/480YV AC | 50/60 | 10,000 A @ 277 V AC 10,000 A @ 480 V AC | 35 | Screw-Clamp Terminals | 4.13" | 2.09" | 2.36" | -4° to 140° | Time Delay Trip | UL 489, CSA Certified | 25 | 000000 | 000000 |
| Current | Includes | Each | |
| 0.5 A @ 110 V DC, 2 A @ 250 V AC | Two Sets of Auxillary Contacts | 0000000 | 000000 |
Blade-Style DC Circuit Breakers
Protect against overload and short circuits in low-voltage automotive and other electronic applications. These circuit breakers can replace type ATC, AF, ATO, and 257 blade-style fuses. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
For technical drawings and 3-D models, click on a part number.
| Voltage | Breakthrough Current | Mounting Location | Ht. | Wd. | Blade Ht. | Temp. Range, °F | Environmental Rating | Specifications Met | Current, A | Each | |
| 12V DC | 2,000 A @ 12 V DC | Fuse Block | 0.95" | 0.79" | 0.25" | -40° to 185° | IP54 | SAE J553 | 25 | 000000 | 00000 |
| Voltage | Breakthrough Current | Mounting Location | Ht. | Wd. | Blade Ht. | Temp. Range, °F | Environmental Rating | Current, A | Each | |
| 24V DC | 2,000 A @ 24 V DC | Fuse Block | 1.16" | 0.79" | 0.25" | -40° to 185° | IP30 | 25 | 000000 | 000000 |
Vibration-Resistant Blade-Style DC Circuit Breakers
These circuit breakers resist vibration better than standard low-voltage DC circuit breakers. They protect against overload and short circuits in low-voltage automotive and other electronic applications. Use them to replace type ATC, AT, ATO, and 257 blade-style fuses. All are thermal, so they use the heat generated in overcurrent situations to trip the breaker.
Breakthrough current is the maximum current that the circuit breaker can safely stop in the event of a short circuit.
For technical drawings and 3-D models, click on a part number.
| Voltage | Breakthrough Current | Mounting Location | Ht. | Wd. | Blade Ht. | Temp. Range, °F | Environmental Rating | Specifications Met | Current, A | Each | |
Push Button Style | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 48V DC | 2,000 A @ 48 V DC | Fuse Block | 1.5" | 0.87" | 0.25" | -40° to 185° | IP40 | SAE J553 | 25 | 000000 | 000000 |