BN220-A420 EE Controls Electronic Overload

At a current range of 275–420 A, the BN220-A420 is suited for large industrial motors typically in the range of 150–250 HP (and above) at 600 V, depending on motor efficiency class and starting method. Always cross-reference the motor's full-load ampere (FLA) rating on its nameplate and set the overload trip class accordingly. Contact us if you need help matching the overload to your specific motor.

In many cases, yes — electronic overloads like the BN220-A420 are designed as direct upgrades to traditional thermal overload relays, offering more accurate and adjustable protection. However, physical mounting dimensions and contactor interface connections must be compatible with your existing starter or MCC bucket. We recommend providing your current overload part number and contactor model so we can confirm a direct replacement fit.

Yes — Northern Breaker Group specializes in obsolete and hard-to-find electrical components, including EE Controls overloads. Even if the BN220-A420 is no longer in regular production, we maintain access to surplus and legacy stock across our Calgary, Edmonton, and Vancouver locations. Contact us for availability and lead time, and we can also identify compatible cross-references if needed.