The ETNBAB3040HS is an Eaton 3-pole 40A circuit breaker designed for 208V applications, equipped with a 120V shunt trip feature for enhanced safety and reliability. Ideal for protecting your electrical systems, this breaker ensures optimal performance and peace of mind. Perfect for industrial and commercial use, it’s a must-have for your electrical supply.
| Brand | Eaton |
|---|---|
| Type | Standard (Thermal-Magnetic) |
| Amperage | 40 A |
| Poles | 3-Pole |
| Voltage | 208V |
| Frame / Series | BAB |
| Catalogue # | ETNBAB3040HS |
The ETNBAB3040HS is an Eaton BAB-frame bolt-on breaker, designed for use in compatible Eaton/Cutler-Hammer CH (Type-CH) panelboards and loadcentres that accept BAB-series bolt-on devices. Its 3-pole, 40A, 208V rating makes it suited to commercial and light-industrial distribution boards operating on 208V systems (e.g. 120/208V wye). The integrated 120V shunt trip requires a separate 120V control circuit connection at the accessory terminals — confirm your panelboard has adequate space and an appropriate auxiliary wiring path before ordering.
Not sure if this breaker fits your board? Send us your panel model number and we'll confirm compatibility.
The shunt trip is an accessory coil that, when energized with 120V AC, remotely trips the breaker open — useful for fire alarm, emergency-stop, or building automation systems. It requires a dedicated 120V control circuit connected to the shunt trip terminals on the breaker. The shunt trip only opens the breaker; it does not reset it, so manual or motorized reset is required after a remote trip event.
The BAB3040HS is voltage-rated at 208V, which means it is approved for use on 120/208V three-phase wye systems. It is not rated for 240V applications. If you require a 240V-rated 3-pole Eaton breaker, a different frame or series (such as the CH or BR line rated to 240V) would be required — contact our team and we can point you to the right option.
Yes. Northern Breaker Group specializes in hard-to-find and obsolete electrical equipment. We maintain stock of and actively source Eaton BAB-frame breakers, including shunt trip variants. Whether you need a single unit or a bulk quantity for a project or maintenance stock, reach out to our Calgary, Edmonton, or Vancouver counters for a quote.
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