Skip to main content
Expedited shipping available at checkout

Eaton / Cutler-Hammer HMC3800 Molded Case Circuit Breaker

  • 800A
  • 3 Pole
  • Unit Mount
Eaton / Cutler-Hammer HMC3800
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU HMC3800
Select Item Condition
Earn 2835 SuperPoints
  • 800A
  • 3 Pole
  • Unit Mount

Quantity

Bulk Pricing
Send your parts list for a volume quote.
Eaton/Cutler-Hammer HMC3800 3 Pole Circuit Breaker

Eaton / Cutler-Hammer HMC3800 - 800A 3 Pole Molded Case Circuit Breaker

Re-Certified

$2,835.74 In Stock

Quantity

Description

Built for heavy-duty industrial environments, the HMC3800 delivers precise microprocessor-based sensing via its Seltronic trip unit. Equipped with an 800A rating plug, this three-pole breaker ensures accurate coordination and reverse feed capabilities. It integrates seamlessly into older Cutler-Hammer, Westinghouse, and Eaton Pow-R-Line switchboards and motor control centers. Delivering 65 kAIC interrupting capacity at 240V, this legacy LC/MC frame component is replaced by the HMDL3800 series.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number HMC3800-R
Series HMC
Amperage 800A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC
Phase 3
AIC Rating 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC
Fit and installation
Terminal Type Lugs
For Use With Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers
Protection and operation
Trip Technology Electronic Trip
Trip Function Code LS
Trip Function Long-Time, Short-Time
Trip Adjustability Fixed
Standards and features
Available Options Shunt Trip, Undervoltage Release, Auxiliary Switch, Alarm Switch
Accessories 800A Rating Plug
Standards CSA C22.2 No. 5, UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features High Interrupting Capacity, Reverse Feed

Product FAQs

6 answers
What type of trip unit is installed in the HMC3800?

This breaker is equipped with a solid-state electronic trip unit featuring fixed Long-Time and Short-Time (LS) functions. Unlike standard thermal magnetic breakers, this microprocessor-based Seltronic trip unit provides precise coordination for heavy industrial environments.

What equipment is the HMC3800 designed to fit?

It is a legacy MC frame component built for use in older Westinghouse, Cutler-Hammer, and Eaton Pow-R-Line panelboards, switchboards, and motor control centers.

What is the modern replacement for the HMC3800?

The HMC3800 is an obsolete legacy breaker. For new installations or direct replacements where the legacy MC frame is no longer required, Eaton has replaced this model with the HMDL3800 series.

Does this circuit breaker require a rating plug?

Yes, because it utilizes a Seltronic electronic trip unit, the HMC3800 requires a compatible rating plug to establish the maximum continuous current and ensure accurate overcurrent protection.

Can the HMC3800 be reverse fed?

Yes, this breaker is designed with reverse feed capabilities, allowing it to be wired in either direction for flexible installation in industrial power systems.

What internal accessories are compatible with this breaker?

This MC frame breaker supports various internal accessories, including shunt trips, undervoltage releases, auxiliary switches, and alarm switches for advanced control and monitoring.

SuperClub

Join free. Get 500 SuperPoints.

Earn points on eligible purchases and redeem them at checkout.

100 SuperPoints = $1 off.

Warranties

60-Day Warranty

Your purchase includes 60 days of SuperBreakers warranty coverage.

Get a Quote

Don’t see what you’re looking for?

We source obsolete and hard-to-find parts every day.

Shipping

Free Shipping Policy

Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.

Read our full shipping policy

Same Day Shipping

We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.

Expedited Shipments

Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.

International Shipping

All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.