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P&B circuit breakers include both thermal and magnetic types in ratings from milliamps to 50 amps. The information below may help users to quickly differentiate these two types of P&B circuit protectors:
Thermal circuit breakers
- Typically less expensive.
- Trip point varies with the ambient temperature.
- One- and two-pole models only.
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Magnetic circuit breakers
- Typically more expensive.
- Temperature stable over a wide range.
- Available with different time delays before tripping.
- One- through four-pole models.
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All series listed below meet the requirements of UL 1077, and recent enhancements allow several models to meet ignition protection requirements according to UL 1500.
Select an appropriate circuit breaker for your application.
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