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The Eaton Cutler-Hammer MDLB3800T36W is a high-performance molded case circuit breaker with the MDLB frame style, designed for industrial and commercial electrical distribution systems. This model features an LSIG (Long-Time, Short-Time, Instantaneous, Ground Fault) non-interchangeable trip unit, providing comprehensive protection against overloads, short circuits, instantaneous faults, and ground faults.
With a maximum rating of 800 amperes at 40°C, a 3-pole configuration, and suitability for reverse feed, it ensures reliable protection and flexibility for various installation scenarios. The breaker is bolt-on type for secure installation in compatible panels or switchgear.
Key Features
- LSIG trip unit for full protection: Long Delay (L), Short Delay (S), Instantaneous (I), and Ground Fault (G)
- Adjustable long delay pickup via rating plug
- Adjustable short delay pickup: I²t response or flat response
- Instantaneous pickup by configuring short time delay to instantaneous
- Adjustable ground fault pickup with configurable delay
- Rated for high interrupting capacities at various voltages for industrial use
- Suitable for reverse feed applications
Electrical Specifications
- Maximum AC Voltage: 600 VAC
- Interrupting Ratings:
-
- 65 kA @ 240 VAC
- 50 kA @ 480 VAC
- 25 kA @ 600 VAC
- Trip Setting: Adjustable 5–10 times the continuous ampere rating
- Maximum Continuous Current: 800A at 40°C
- Poles: 3
Mechanical & General Specs
- Manufacturer: Eaton / Cutler-Hammer
- Frame Type: MDLB
- Mounting Type: Bolt-On
- Standard Lug Type: Not included / configurable
- Warranty: 1 Year
- Configuration: Molded Case Circuit Breaker with LSIG Trip Unit
Important Notes
- Rating Plug Required: This unit requires a rating plug to operate; it is not included. Check availability and pricing before ordering if you need one installed.
- Accessory Installation: Accessories ordered with the breaker can be installed at no additional cost. Include configuration requirements in the order comment box during checkout.
- Product image is for identification purposes only.
This breaker is ideal for systems demanding full-range adjustable protection, including overload, short-time, instantaneous, and ground fault protection in heavy-duty industrial environments