Circuit Breakers for Branch Circuit Protection
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- DIN Rail Mounted
- Disconnect and Switching Function
- 17.5 mm (0.69") Width per Pole
- Thermal Magnetic and Current Limiting
- Available in AC and DC
- 240V, 480Y/277 Vac, 50/60Hz
- 125 Vdc (1-Pole), 250 Vdc (2-Pole)
- 10kA Short Circuit Interrupting Capacity
- HACR Type 40°C (104°F)
- Line/Load Reversible
AU-1C25UL Model OptionsView all models
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The UL 489 Series miniature molded case circuit breakers are DIN rail mountable and provide feeder and branch circuit protection per UL 489. Typical uses include convenience receptacles, motor controls, load circuits leaving equipment, and heating and air conditioning. UL 489 Series miniature circuit breakers are available in one-, two-, three- and four-pole configurations and up to 23 different current ratings from 0.3A to 63A and can safely be used in applications up to 480Y/277 Vac with a 10kA short circuit withstand rating.
AC Application C-Trip Curve
Low inrush motors, resistive loads, wiring protection, receptacles, lighting, and control circuit applications. Relatively short thermal trip delay and medium magnetic trip point.
AC Applications D-Trip Curve
High inrush motors, transformers, power supplies, heaters and reactive loads. Relatively long thermal trip delay and very high magnetic trip point.
DC Applications C and D-Trip Curves
Telecommunication equipment, computer equipment, uninterruptable power supplies.
Features Provided by the Different Types of Circuit Breakers
UL1077 Recognized Supplementry Protectors
UL508 Listed Manual Motor Controllers
UL489 Miniature Molded Case Circuit Breakers
Short Circuit Protection