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Eaton / Cutler-Hammer HFA3040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFA3040
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFA3040
Quantity
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Eaton / Cutler-Hammer HFA3040 - 40A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for industrial applications, the Eaton HFA3040 is a 3-pole, 40A molded case circuit breaker. It utilizes fixed thermal-magnetic trip technology to deliver consistent overcurrent protection. This bolt-on breaker is designed to fit into Eaton Series C panelboards, motor control centers, and switchboards. As a legacy component, it is replaced by the newer HFD3040 model for system upgrades. It features a high interrupting rating of 65kA at 240VAC and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFA3040-R |
| Series | HFA |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | HFA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the HFA3040?
This breaker is engineered specifically for Eaton Series C panelboards, switchboards, and motor control centers. It utilizes a bolt-on configuration and will not fit in standard residential plug-on load centers.
What is the modern replacement for the legacy HFA3040 breaker?
The HFA3040 is a legacy component. For new installations or system upgrades, the Eaton HFD3040 is the direct Series C replacement, offering a higher interrupting capacity of 65kAIC at 480VAC.
What wire sizes are accepted by the terminals on the HFA3040?
The standard lugs accommodate wire gauges from 14 AWG up to 1/0 AWG. Ensure proper torque specifications are followed during installation to maintain a secure and safe electrical connection.
Are the trip settings on the HFA3040 adjustable?
No, this breaker features a non-interchangeable trip unit with fixed thermal and fixed magnetic settings. The long-time and instantaneous (LI) trip functions cannot be modified in the field.
Is the HFA3040 suitable for HVAC applications?
Yes, this breaker is HACR rated, meaning it has been tested and approved for the specific inrush currents and operational demands of heating, air conditioning, and refrigeration equipment.
Can the HFA3040 be reverse fed?
Yes, this thermal-magnetic breaker is reverse feed capable, allowing line power to be connected to either the top or bottom terminals without compromising the overcurrent protection.
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