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Compact grey moulded case circuit breaker, bolt-on mounting, single pole, lug terminals

GE

GE 45 A 277/480 V AC 1-pole bolt-on circuit breaker

SKU CH-J9TY-M0JH2

Single-pole bolt-on breaker rated 45 A at 277/480 V AC with 14 kA interrupting capacity for GE AE lighting panels

  • TypeCircuit Breakers
  • Thermal-magnetic protection trips reliably on overloads and short circuits
  • 14 kA interrupting rating at 277 V AC handles high fault currents
  • Bolt-on mounting fits GE AE lighting panels without extra hardware
  • Single-pole 45 A rating suits 277/480 V AC and 125 V DC circuits
  • Compact 5.25 × 1 × 3.06 in frame saves panel space

45 A Single-Pole Circuit Breaker

This GE bolt-on breaker provides 45 A overcurrent protection for single-phase 277/480 V AC panels. It fits GE AE lighting panelboards using the TEY frame and mounts directly onto the bus without a separate adapter. The thermal-magnetic trip unit offers fixed instantaneous response for consistent fault clearing.

Sustained Load Behaviour

The thermal element carries 45 A continuously while warming at the same rate as downstream conductors. Under prolonged overload the bi-metal strip bends gradually to open the contacts before insulation degrades. A 14 kA interrupting rating at 277 V AC ensures the breaker survives high fault currents without contact welding or case rupture.

Voltage and Frame Limits

Operation is restricted to 277 V AC phase-to-neutral or 480 V AC phase-to-phase systems with a 125 V DC option. The 125 A TEY frame caps the maximum trip setting at 250 A, so the device cannot protect conductors rated above that threshold. Lug terminals accept wire sizes suited to the 45 A rating only.

Highlights

  • Thermal-magnetic protection trips reliably on overloads and short circuits
  • 14 kA interrupting rating at 277 V AC handles high fault currents
  • Bolt-on mounting fits GE AE lighting panels without extra hardware
  • Single-pole 45 A rating suits 277/480 V AC and 125 V DC circuits
  • Compact 5.25 × 1 × 3.06 in frame saves panel space

Specifications

BrandGe
TypeCircuit Breakers

Questions about this item

How much heat does the 45 A single-pole breaker dissipate when it runs continuously in a fully loaded panel?

The thermal-magnetic trip unit is calibrated for 45 A continuous current; heat output is governed by the 125 A frame rating and the 14 kA interrupting capacity at 277 V AC, so the breaker meets standard panelboard temperature-rise limits without additional derating.

What panelboard and bus configuration must already be in place for this bolt-on breaker to install and operate?

It requires a GE AE lighting panel with a 125 A TEY-series bus that accepts bolt-on, single-pole breakers on any phase connection.

Will the fixed instantaneous trip at 250 A coordinate with older downstream breakers fed from the same 277/480 V AC bus?

The fixed instantaneous setting of 250 A provides a consistent magnetic threshold; coordination with older downstream devices depends on their own trip curves and the available fault current, which is limited to 14 kA at 277 V AC by this breaker's interrupting rating.

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