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Square D MJA36600LC Molded Case Circuit Breaker
- 600A
- 3 Pole
- I-Line
Square D
MJA36600LC
Molded Case Circuit Breaker
Brand
Square D
SKU
MJA36600LC
Quantity
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Square D MJA36600LC - 600A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for precise coordination, this 600A electronic trip breaker is part of the PowerPacT M-Frame family. It is optimized for integration into Square D I-Line switchboards. An I-Line plug-on connection allows efficient mounting to the bus assembly. Facilities can use this model to replace legacy MA and MH frame units without modifying the enclosure. Equipped with copper lugs, it provides robust connectivity. The unit features LI trip functions and a 65 kAIC rating at 480VAC.Specifications
| Brand | Square D |
|---|---|
| Series | MJA |
| Amperage | 600A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards, Switchboards |
| Wire Gauge | (3) 3/0 AWG-500 kcmil (Cu Only) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 AWG |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Copper Lugs Included |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, NOM-003-SCFI-2000, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | Current Limiting, HACR Rated, Non-Interchangeable Trip, 80% Rated, Mercury Free, PVC Free, Push-to-Trip |
Product FAQs
6 answersCan the MJA36600LC replace older Square D MA or MH frame circuit breakers?
Yes, the PowerPacT M-frame is designed as an upgrade for legacy MA and MH breakers. It features an approximately 15 percent smaller installed volume while maintaining compatibility with I-Line panelboards and switchboards.
What does the LC suffix mean in the MJA36600LC catalog number?
The LC suffix indicates that the circuit breaker is factory-equipped with standard copper lugs on the load side. The line side utilizes the standard I-Line plug-on jaw connection.
What type of trip unit is included in the MJA36600LC?
This breaker features an ET 1.0 basic electronic trip unit with LI (Long-Time and Instantaneous) protection. It provides a fixed long-time overload setting and an adjustable instantaneous short-circuit trip setting.
What wire size and material do the load lugs on the MJA36600LC accept?
The load-side lugs are designed to accept three 3/0 AWG to 500 kcmil copper wires per phase.
How does the I-Line mounting style work on this breaker?
The I-Line design features plug-on jaws on the line side that snap directly onto the busbar of a Square D I-Line panelboard or switchboard. This allows for faster installation compared to traditional bolt-on breakers.
Is the MJA36600LC compatible with standard 80 percent continuous current applications?
Yes, this breaker is standard-rated for 80 percent continuous current.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- JKJosh K.ReviewingSquare D MJA36800 - 800A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars3/12/21Great Price
Great breaker and Price.
- KPKevin P.ReviewingSquare D MJA36500 - 500A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/26/21Easy to order
Easy to order with good pricing!