Square D PJA Series Circuit Breakers
The Square D PJA series is a PowerPact P-Frame molded case circuit breaker with ET1.0 electronic trip and I-Line plug-in mounting, rated for 1200A frame size and 600VAC operation.
Series Specifications
| Frame | P-Frame (PowerPact) — 1200A Frame |
|---|---|
| Amperage Range | 250A – 1200A |
| Voltage | 600VAC |
| Poles | 3-Pole |
| Interrupting Rating | 25kA @ 600V / 65kA @ 480V / 100kA @ 240V |
| Mounting | I-Line Plug-In |
| Trip Type | ET1.0 Electronic |
History and Replacement Context
The PJA series uses the ET1.0 (Electronic Trip 1.0) unit providing adjustable long-time, short-time, and instantaneous protection settings.
Typical Applications
- Industrial switchboards
- Large motor protection
- Main distribution
- I-Line switchboard applications
Available Catalog Numbers
- PJA36040 — 400A, 3 pole, 600VAC
- PJA36060 — 600A, 3 pole, 600VAC
- PJA36080 — 800A, 3 pole, 600VAC
- PJA36100 — 1000A, 3 pole, 600VAC
- PJA36120 — 1200A, 3 pole, 600VAC
- PJA36025 — 250A, 3 pole, 600VAC
- PJA36030 — 300A, 3 pole, 600VAC
- PJA36035 — 350A, 3 pole, 600VAC
- PJA36045 — 450A, 3 pole, 600VAC
- PJA36050 — 500A, 3 pole, 600VAC
- PJA36070 — 700A, 3 pole, 600VAC