Built for circuit protection, the Eaton / Cutler-Hammer QBHW3060HT is a 60A, 3-pole miniature circuit breaker rated 240VAC with a 22kA interrupting rating at 240VAC. This QBHW series breaker has a BAB frame and bolt-on mounting with lug terminals. Fixed thermal magnetic tripping provides long-time and instantaneous protection. It is HACR rated, with CSA C22.2 No. 5 and UL 489 standards and CSA and UL approvals.
How do I check whether its interrupting rating is adequate?
The interrupting rating is 22kA at 240VAC. The available fault current at the installation point must not exceed that rating.
How does its thermal-magnetic trip protect the circuit?
The thermal element provides long-time overload protection, while the magnetic element provides instantaneous response to high fault current. This combines delayed overload operation with rapid short-circuit operation.
Can I adjust the thermal or magnetic trip settings?
Both the thermal and magnetic trip settings are fixed. Select this breaker when fixed trip characteristics suit the protection scheme, rather than when field-adjustable settings are required.
What does the HACR rating mean for equipment selection?
HACR refers to heating, air conditioning and refrigeration. The HACR rating is relevant when that equipment requires a HACR-rated circuit breaker; also check the circuit's current, voltage and interrupting requirements.
How is this breaker secured during installation?
It uses bolt-on mounting, which secures the breaker with a bolted connection. Plan the installation around that fastening method.
What conductor sizes can its lug terminals accept?
The lug terminals accept wire from 8 AWG through 1/0 AWG. Choose conductors within that range and size them for the circuit's ampacity requirements.
Does this breaker have UL and CSA approvals?
It has UL and CSA approvals under UL 489 and CSA C22.2 No. 5. These circuit-breaker standards are relevant when selecting equipment for projects requiring those approvals.
What electrical ratings should I check when selecting the Eaton / Cutler-Hammer QBHW3060HT?
The Eaton / Cutler-Hammer QBHW3060HT has a 60A current rating, a 240VAC voltage rating and a 3-pole, 3-phase configuration. Evaluate the circuit's current, voltage and phase requirements together when choosing overcurrent protection.
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Review summary
Customers rate this product 4.8 out of 5 based on 11 reviews.