Eaton / Cutler-Hammer HMCP Series Circuit Breakers
The Eaton / Cutler-Hammer HMCP series is a motor circuit protector (MCP) designed specifically for motor branch circuit protection. HMCP breakers use magnetic-only (instantaneous) trip to protect motor circuits without nuisance tripping from motor inrush current.
Series Specifications
| Frame | Motor Circuit Protector — Various |
|---|---|
| Amperage Range | 3A – 150A |
| Voltage | 600VAC |
| Poles | 3-Pole |
| Interrupting Rating | 100kA @ 480V |
| Mounting | Bolt-On |
| Trip Type | Magnetic Only (Instantaneous) |
History and Replacement Context
The HMCP series was developed specifically for motor branch circuit protection in compliance with NEC Article 430. Motor circuit protectors use magnetic-only trip to avoid nuisance tripping from motor starting inrush current while providing short-circuit protection.
Typical Applications
- Motor branch circuit protection
- Motor control centers
- Industrial motor starters
- Variable frequency drive (VFD) protection
- Pump and compressor protection
Available Catalog Numbers
- HMCP003A0C — 3A, 3 pole, 240/480VAC
- HMCP007A0C — 7A, 3 pole, 240/480VAC
- HMCP015A0C — 15A, 3 pole, 240/480VAC
- HMCP030A0C — 30A, 3 pole, 240/480VAC
- HMCP050A0C — 50A, 3 pole, 240/480VAC
- HMCP100A0C — 100A, 3 pole, 240/480VAC
- HMCP150A4C — 150A, 3 pole, 240/480VAC
- HMCP3003 — 3A, 3 pole, 600V
- HMCP3007 — 7A, 3 pole, 600V
- HMCP3015 — 15A, 3 pole, 600V
- HMCP3030 — 30A, 3 pole, 600V
- HMCP3050 — 50A, 3 pole, 600V
- HMCP3100 — 100A, 3 pole, 600V
- HMCP3150 — 150A, 3 pole, 600V