Skip to main content
Expedited shipping available at checkout

ABB XT7SU312EEFF000XXX Molded Case Circuit Breaker

  • 1200A
  • 3 Pole
  • Unit Mount
ABB XT7SU312EEFF000XXX
Molded Case Circuit Breaker
Brand ABB
SKU XT7SU312EEFF000XXX
Select Item Condition
Earn 7468 SuperPoints
  • 1200A
  • 3 Pole
  • Unit Mount

Quantity

Bulk Pricing
Send your parts list for a volume quote.

ABB XT7SU312EEFF000XXX - 1200A 3 Pole Molded Case Circuit Breaker

New

$7,468.98 In Stock

Quantity

Description

Engineered for heavy commercial and industrial applications, this 1200A SACE Tmax XT7 molded case circuit breaker delivers reliable microprocessor-based protection. It installs into ABB ReliaGear neXT power panels, ReliaGear SB switchboards, and standard XT7 enclosures, serving as a modern replacement for legacy T7S 1200 units. The integrated Ekip Dip LS/I trip unit provides adjustable long-time, short-time, and instantaneous settings to ensure precise coordination across complex networks.

Specifications

Key specifications
Brand ABB
Series XT7S
Amperage 1200A
Poles 3
Mounting Style Unit Mount
Voltage 240VAC, 480VAC, 600VAC
Phase 3
AIC Rating 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC
Electrical ratings
Amperage Range 480-1200A
Fit and installation
Frame Type XT7
Terminal Type Lugs
For Use With ABB SACE Tmax XT7 Enclosures, Switchboards, ReliaGear neXT Power Panels, ReliaGear SB Switchboards
Protection and operation
Trip Technology Electronic Trip
Trip Function Code LSI
Trip Function Long-Time, Short-Time, Instantaneous
Trip Adjustability Adjustable
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Motor Operator, Lugs, Padlock Attachment
Accessories None (Standard Configuration)
Standards CSA C22.2 No. 5, IEC 60947-2, UL 489
Approval CCC, CE, CSA, cULus, EAC, KEMA, RINA, UL
Temp Rating -25C to 70C
Construction Features HACR Rated, Reverse Feed, True RMS Sensing, Trip-Free Mechanism, Quick-Make/Quick-Break

Product FAQs

9 answers
What enclosures and panels are compatible with the XT7SU312EEFF000XXX?

This breaker is designed for use with ABB SACE Tmax XT7 enclosures, switchboards, ReliaGear neXT power panels, and ReliaGear SB switchboards.

Can this XT7 breaker replace older legacy models?

Yes, the Tmax XT7 series serves as a modern replacement for legacy T7S 1200 units in compatible ABB and GE distribution equipment.

Is the XT7SU312EEFF000XXX rated for 80% or 100% continuous current?

This breaker is standard 80% rated for continuous current applications under UL guidelines.

What type of trip unit is installed in the XT7SU312EEFF000XXX?

It comes equipped with an Ekip Dip LS/I electronic trip unit, which provides adjustable Long-Time, Short-Time, and Instantaneous protection settings.

How does this breaker mount into a panel?

The XT7SU312EEFF000XXX is a fixed mount, bolt-on circuit breaker that connects using standard front terminal lugs.

Can this breaker be reverse fed?

Yes, Tmax XT7 circuit breakers have reverse feed capabilities. Power can be supplied from the bottom terminals up to the maximum voltage rating.

What is the operating temperature range for this Tmax XT7 breaker?

It is designed to operate in ambient air temperatures ranging from -25 degrees Celsius to +70 degrees Celsius.

What does the EE in the XT7SU312EEFF000XXX catalog number signify?

The EE in the part number designates that the breaker is equipped with the solid-state Ekip Dip LS/I electronic trip unit.

What is the difference between the XT7 and XT7M frames?

The standard XT7 uses a traditional toggle operating mechanism, while the XT7M features an integrated stored energy mechanism that allows for easier operation and optional spring charging motors.

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.