Square D MJA36800SA Molded Case Circuit Breaker
- 800A
- 3 Pole
- I-Line
Quantity
Square D MJA36800SA - 800A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial and industrial applications, the Square D MJA36800SA is an 800A, 3-pole PowerPacT M-Frame circuit breaker. This unit installs into Square D I-Line panelboards and switchboards, serving as a drop-in replacement for legacy MA and MH frame breakers. Rated 65kAIC at 480VAC, it features an ET 1.0 electronic trip unit with fixed long-time and adjustable instantaneous (LI) functions. A factory-installed 120VAC shunt trip is included for remote tripping capabilities.Specifications
| Brand | Square D |
|---|---|
| Part Number | MJA36800SA |
| Series | MJA |
| Amperage | 800A |
| 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 (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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Rotary Handle, Lug Kits |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side 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
5 answersWhat does the SA suffix indicate on the MJA36800SA catalog number?
The SA suffix designates that this breaker is factory-equipped with a 110 to 130 VAC shunt trip accessory. This allows the breaker to be tripped remotely via an external control voltage signal.
Which panelboards are compatible with the MJA36800SA breaker?
This breaker features an I-Line plug-on mounting style on the line side. It is designed exclusively for use in Square D I-Line panelboards and switchboards. It cannot be used in standard unit-mount or lug-to-lug applications.
How are the line and load connections configured on this breaker?
As an I-Line breaker, the line side features plug-on jaws that connect directly to the panelboard bus. The load side is equipped with mechanical lugs that accept three 3/0 AWG to 500 kcmil aluminum or copper conductors per phase.
Can the trip unit on the MJA36800SA be upgraded or swapped out?
No. This breaker comes with a basic, non-interchangeable 1.0 electronic trip unit. It provides Long-Time and Instantaneous (LI) protection, but the trip unit itself cannot be removed or replaced with an upgraded model.
What does the MJA prefix specify in the PowerPacT series?
The MJA prefix indicates that this is an M-Frame breaker with a specific interrupting rating tier. In this case, the J designates a high interrupting rating, providing 65kA of fault clearance capacity at 480VAC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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!