BJA36070 - Square D - PowerPacT B I-Line Molded Case Circuit Breaker - 70 Amp - 3 Pole - 600 Volt
BJA36070 - Square D - PowerPacT B I-Line Molded Case Circuit Breaker - 70 Amp - 3 Pole - 600 Volt
Product images are representative only. Actual product may vary.
The Square D BJA36070 is a 70A, 3-pole PowerPacT B-Frame molded case circuit breaker with an I-Line plug-in line-side connection, rated 600Y/347VAC and built for Square D I-Line panelboards and switchboards.
This thermal-magnetic breaker delivers fixed Long-Time and Instantaneous (LI) protection with a 65kA interrupting rating at 480VAC. Dual-break rotating contacts limit peak let-through current during a short circuit, and the 80%-rated B-Frame body packs full capacity into roughly two-thirds the footprint of legacy Square D F-Frame breakers — so it drops straight into existing I-Line mounting space during retrofits and panel expansions. It is the designated replacement for the discontinued FH36070. Line side uses I-Line jaws with ABC phase sequence; load side ships with mechanical lugs and a push-to-trip test button.
Specifications
| Brand | Square D / Schneider Electric |
|---|---|
| Series | PowerPacT B-Frame, I-Line, Type BJ |
| Part Number | BJA36070 |
| Amperage | 70A (125A frame) |
| Voltage | 600Y/347VAC, 480VAC, 480Y/277VAC, 240VAC, 208Y/120VAC, 250VDC |
| Poles | 3 |
| Phase | 3 |
| AIC Rating | 100kA @ 208Y/120VAC, 100kA @ 240VAC, 65kA @ 480VAC and 480Y/277VAC, 25kA @ 600Y/347VAC, 50kA @ 250VDC (UL 489) |
| Mounting Style | I-Line Plug-In |
| Terminal Type | I-Line jaws on line side, mechanical lugs on load side |
| Phase Sequence | ABC |
| Continuous Current Rating | 80% |
| For Use With | Square D I-Line Panelboards, Switchboards, and Busway Plug-In Units |
| Trip Technology | Thermal Magnetic (LI — Long-Time, Instantaneous) |
| Trip Adjustability | Fixed Thermal / Fixed Magnetic |
| Wire Range | #14 AWG – 2/0 AWG (Al/Cu) |
| Replaces | Square D FH36070 and legacy F-Frame I-Line breakers, per Schneider F-Frame to B-Frame conversion |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Terminal Shields |
| Standards | UL 489, CSA C22.2 No. 5, IEC 60947-2, IEC 60947-5-1, NEMA AB 1, NMX J-266, GB 14048.2 |
| Approvals | UL, CSA, CE, CCC, EAC, IEC, NOM, UKCA |
| Operating Temperature | -25°C to 70°C |
| Shipping Dimensions | 14 x 10 x 10 in |
| Shipping Weight | 8 lb |
| Condition | New |
Frequently Asked Questions
What is the interrupting rating of the BJA36070?
65kA at 480VAC, 100kA at 240VAC, 25kA at 600Y/347VAC, and 50kA at 250VDC. The "J" in the catalog number identifies this 65kA interrupting class.
What does BJA36070 stand for?
B = PowerPacT B-Frame, J = 65kA interrupting rating at 480VAC, A = I-Line plug-in with ABC phase sequence, 3 = 3 poles, 6 = 600V class, and 070 = 70 amps.
What older Square D breaker does the BJA36070 replace?
It is the current replacement for the discontinued FH36070 and other legacy F-Frame I-Line breakers. The B-Frame keeps the same I-Line mounting space, so it retrofits into existing I-Line panelboards without modifying the bus.
Is the BJA36070 trip setting adjustable?
No. It uses a fixed thermal and fixed magnetic (LI) trip unit, so the 70A rating is not field-adjustable.
How does the BJA36070 connect on the line and load sides?
The line side uses I-Line jaws that plug directly onto the panelboard bus. The load side is supplied with mechanical lugs accepting #14 AWG through 2/0 AWG aluminum or copper conductors.
Can the BJA36070 be used on a 600V system?
Yes, on 600Y/347VAC wye systems with a 25kA interrupting rating. It is not rated for 600V corner-grounded delta service.
Is the BJA36070 UL listed?
Yes. It is UL 489 listed and also certified to CSA C22.2 No. 5, IEC 60947-2, NOM, and CCC standards, with CE and UKCA marking.
What is the continuous load rating on a 70A BJA36070?
The breaker is 80% rated, so continuous loads should not exceed 56 amps unless the breaker is applied in an assembly specifically listed for 100% continuous duty.