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Square D MJL36350 Molded Case Circuit Breaker
- 350A
- 3 Pole
- Unit Mount
Square D
MJL36350
Molded Case Circuit Breaker
Brand
Square D
SKU
MJL36350
Quantity
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Square D MJL36350 - 350A 3 Pole Molded Case Circuit Breaker
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Description
Providing advanced circuit protection, the Square D MJL36350 is a 350A, 3-pole electronic trip molded case circuit breaker. It is engineered for demanding commercial and industrial environments. Designed for unit-mount applications, it easily integrates into Square D switchboards and motor control centers. It serves as an exact replacement for legacy MA36350 and MH36350 breakers. This 600VAC breaker features an ET 1.0 trip unit with adjustable magnetic settings and a 65kAIC rating at 480V.Specifications
| Brand | Square D |
|---|---|
| Part Number | MJL36350 |
| Series | MJL |
| Amperage | 350A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Frame Type | MJL |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D Switchboards, Motor Control Centers, Industrial Control Panels |
| Wire Gauge | (3) 3/0 AWG - 500 kcmil (Al/Cu) |
| 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, Handle Padlock Attachment |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, NOM, UL |
| Temp Rating | -25C to 70C |
| Construction Features | HACR Rated, Current Limiting, 80% Rated, Mercury Free, PVC Free, Non-Interchangeable Trip |
Product FAQs
9 answersWhat is the required lug torque for the MJL36350?
The standard AL800M23K lugs on this breaker require a tightening torque of 442.5 in-lb (50 N.m) for 3/0 AWG to 500 kcmil aluminum or copper wire.
Can the Square D MJL36350 be reverse fed?
Yes, PowerPacT M-frame electronic trip circuit breakers can be reverse connected. They do not have restrictive line and load markings.
Is the MJL36350 a 100 percent rated circuit breaker?
No, this is a standard 80 percent rated circuit breaker. For a 100 percent rated version, you would need a model with a C suffix, such as MJL36350C.
What does the J in the MJL36350 catalog number signify?
The J indicates the interrupting capacity tier for the PowerPacT M-frame. It provides 100kA at 240VAC, 65kA at 480VAC, and 25kA at 600VAC.
Does this unit mount breaker include line and load lugs?
Yes, the MJL36350 comes standard with mechanical lugs on both the line and load sides for feed-thru connection.
What type of trip unit is installed in the MJL36350?
It features a basic ET 1.0 electronic trip unit with long-time and adjustable instantaneous protection.
How is the instantaneous trip setting adjusted on this breaker?
The ET 1.0 electronic trip unit features a dial on the front face of the breaker to adjust the instantaneous magnetic tripping current based on your coordination requirements.
What is the difference between the MGL36350 and the MJL36350?
The difference is the interrupting capacity. The MGL36350 has a standard G rating (65kA at 240V, 35kA at 480V) while the MJL36350 has a higher J rating (100kA at 240V, 65kA at 480V).
Does the MJL36350 provide ground fault protection?
No, this specific model features a basic ET 1.0 LI trip unit (Long-Time and Instantaneous) which does not include ground fault protection.
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