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Feels well-built and suitable for everyday plant and maintenance use.
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Circuit Breaker
Square D | MEF436LI | Circuit Breaker | 400A | 3-Pole | 600V
| Part Number | MEF436LI |
| Amperes | 400 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | Circuit Breaker |
Regular price
$2,010.00
Sale price
$2,010.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Square D | MEF436LI | Circuit Breaker | 400A | 3-Pole | 600V
Regular price
$2,010.00
Sale price
$2,010.00
Regular price
Unit price
Product description
Shipping
Square D MEF436LI is a 400A, 3-Pole, 600V circuit breaker designed for reliability in demanding electrical environments. Identified by part number MEF436LI, this unit is ideal for maintenance, retrofit, and replacement projects where exact specs must be matched to the original equipment. Before ordering, confirm fit and ratings using the MEF436LI reference as the primary compatibility check.
What makes it stand out
- Exact compatibility when you need a like-for-like replacement for Square D panels that require MEF436LI
- High-current protection with a 400A rating to safeguard feeders, motors, and critical circuits in three-phase systems
- Three-pole design supports balanced protection across all three phases in commercial and industrial installations
- 600V maximum voltage rating suitable for common industrial power distribution environments
Typical use cases
- Maintenance: swap in a new breaker to restore reliable protection without reconfiguring the panel
- Retrofit: upgrade legacy installations that were originally configured for 400A, 3-Pole, 600V protection
- Replacement: quickly replace an aging or failed breaker with an exact spec match to maintain system integrity
Specifications at a glance
- Amperage: 400A
- Poles: 3-Pole
- Voltage: 600V
- Part number: MEF436LI
Notes: Confirm fit and ratings before ordering. The part number MEF436LI is the best reference for compatibility with your panel and electrical system.
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
Verified
Lead time was reasonable and the part matched expectations when it arrived.
Procurement · Ontario
Verified
Good value for industrial use. Customers mention easy installation.
Service tech · Field work
