The EH24050 is a 2-pole, 50-amp molded case circuit breaker from Square D, designed for commercial and industrial applications. Operating at 480Y/277VAC, it provides essential long-time and instantaneous trip functions to safeguard electrical systems. This plug-on breaker is engineered to mount into legacy Square D NEHB panelboards. For users needing a modern equivalent, it is replaced by the bolt-on EHB24050 model. Featuring a 14kAIC rating at 480Y/277V, it includes a Visi-Trip indicator.
What panelboards are compatible with the Square D EH24050 circuit breaker?
The EH24050 is a plug-on circuit breaker designed exclusively for legacy Square D NEHB panelboards. It will not fit modern NF or NQ series panels.
Is there a bolt-on alternative to the EH24050?
Yes, the EHB24050 is the bolt-on equivalent to this breaker. Square D NEHB panelboards are designed to accept both plug-on (EH) and bolt-on (EHB) circuit breakers.
Can the EH24050 be installed on a 480V ungrounded delta system?
No. The 480Y/277VAC slash rating indicates this breaker is only suitable for solidly grounded wye systems where the line-to-neutral voltage does not exceed 277V. It is not rated for straight 480V delta systems.
How does the EH24050 mount into the panelboard?
The EH24050 features a plug-on connection that engages directly with the bus bars of an NEHB panelboard. Unlike the EHB series, it does not require bolt-on mounting hardware.
Does the EH24050 include a visual trip indicator?
Yes, Square D EH series breakers feature a Visi-Trip indicator. When the breaker trips due to an overcurrent or short circuit, a highly visible red indicator appears to help quickly identify the faulted circuit.
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Customers rate this product 5.0 out of 5 based on 7 reviews.