BN220-A310 EE Controls Bimetallic Overload

The BN220-A310 has a current range of 200–310 A, making it suitable for protecting large three-phase industrial motors typically in the range of approximately 75–150 kW (100–200 HP) at 600 V, depending on motor efficiency and service factor. Always verify the motor's full-load amperage (FLA) falls within the relay's range before installation.

Yes — Northern Breaker Group specialises in obsolete and hard-to-find industrial controls, and the BN220-A310 is available through our inventory network. If you're replacing an existing EE Controls BN220-series overload, confirm the current range and contactor frame match your existing setup. Contact our Calgary, Edmonton, or Vancouver counters or request a quote online and we'll verify compatibility.

Most bimetallic overload relays, including the EE Controls BN220 series, offer both manual and automatic reset modes. Manual reset requires an operator to physically reset the relay after a trip, which is the recommended setting for motor protection per Canadian Electrical Code (CEC) guidelines in many industrial applications — it prevents automatic re-energisation before the fault condition is investigated. Check the relay's adjustment collar or reset selector to confirm the mode configured for your application.