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Square D 997327 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Bolt-On
Square D
997327
Molded Case Circuit Breaker
Brand
Square D
SKU
997327
Quantity
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Square D 997327 - 225A 3 Pole Molded Case Circuit Breaker
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Description
Built to support heavy-duty commercial loads, the Square D 997327 is a 225-amp, 3-pole molded case circuit breaker. It operates at up to 600VAC, providing robust thermal-magnetic protection for critical electrical distribution networks. Designed as a replacement for aging infrastructure, this breaker mounts seamlessly into Square D Type ML panelboards. With a 10kAIC interrupt rating at both 480VAC and 600VAC, it ensures reliable long-time and instantaneous fault clearing capabilities.Specifications
| Brand | Square D |
|---|---|
| Part Number | 997327-R |
| Series | 997 |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 480VAC, 10kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D Type ML Panelboards |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489 |
| Approval | UL |
| Temp Rating | 40°C |
Product FAQs
6 answersWhich panelboards accept the Square D 997327 circuit breaker?
The 997327 is engineered specifically for legacy Square D Type ML panelboards. It provides a direct fit for facilities maintaining older infrastructure without requiring a full panel upgrade.
Does the 997327 replace older ML-3 frame breakers?
Yes, as part of the legacy 99 Series, the 997327 serves as an exact replacement for discontinued 225A ML-3 frame circuit breakers in existing Square D installations.
Are the trip settings on the 997327 adjustable?
No, the 997327 features fixed thermal and magnetic trip elements for its long-time and instantaneous (LI) protection functions. It does not offer adjustable trip dials.
What are the termination and mounting requirements for the 997327?
The breaker requires a bolt-on connection directly to the panelboard busbar and utilizes standard lug terminals for secure load-side wire terminations.
Is the 997327 rated for high fault current systems?
The 997327 provides a standard interrupting capacity of 10kA at both 480VAC and 600VAC. It is intended for legacy commercial systems that do not require higher short-circuit current ratings.
Does the 997327 provide ground fault protection?
No, the 997327 is a standard thermal-magnetic breaker providing only long-time and instantaneous (LI) overcurrent and short-circuit protection. It does not include integrated equipment ground fault capabilities.
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