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Federal Pacific NFS4330 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Plug-On
Federal Pacific
NFS4330
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFS4330
Quantity
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Federal Pacific NFS4330 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the Federal Pacific NFS4330 delivers 30 amps of thermal-magnetic protection. This 3-pole molded case circuit breaker serves as an essential component for maintaining legacy electrical infrastructure without requiring complete system overhauls. Mounts into FPE NFS panelboards utilizing a stab-in connection. It functions as an exact fit replacement, ensuring seamless integration with existing hardware.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFS4330-R |
| Series | NFS |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 600VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific NFS Panelboards |
| Wire Gauge | 10 AWG |
| Max Wire | 10 AWG |
| Min Wire | 10 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Non-Interchangeable Trip |
Product FAQs
6 answersWhich panelboards accept the Federal Pacific NFS4330 circuit breaker?
The NFS4330 is engineered specifically for legacy Federal Pacific NFS panelboards. It functions as an exact fit replacement for maintaining existing electrical infrastructure.
How does the NFS4330 connect to the panelboard bus?
This breaker utilizes a plug-in, or stab-in, mounting mechanism. This allows it to seat directly into the busbars of Federal Pacific NFS panelboards without requiring additional mounting brackets or adapters.
What wire gauge is required for the terminal lugs on the NFS4330?
The lugs on this 30-amp breaker are sized to accept 10 AWG wire. Ensure proper torque specifications are followed during installation to maintain a secure connection.
How does the trip unit function on the NFS4330?
It is equipped with a fixed thermal magnetic trip unit. This provides a long-time delay for standard overcurrent protection and an instantaneous trip response to quickly clear short circuits.
What is the maximum voltage and interrupting capacity for this breaker?
The NFS4330 is rated for a maximum of 600VAC. It delivers an interrupting rating of 18,000 amps (18kAIC) at both 240VAC and 600VAC, making it suitable for commercial and industrial loads.
What frame size does the NFS4330 belong to?
This breaker is part of the Federal Pacific N-Frame group. It is a legacy molded case circuit breaker designed to replace original FPE infrastructure components.
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