Leviton 2-Pole GFCI Molded Case Circuit Breaker
The Leviton 2-Pole GFCI Molded Case Circuit Breaker is engineered to deliver reliable ground-fault protection for commercial and industrial electrical distribution systems. Built as a 2-pole molded case breaker, this device is designed for configurations including 50-Amp ratings on 120/208/240-Volt AC systems, giving electrical contractors a dependable option for panelboard and load center protection. Ground-fault circuit interrupter (GFCI) technology continuously monitors current flow and interrupts power in the event of a ground fault, helping protect personnel and equipment from electrical hazards on demanding job sites.
Key Features
- 2-Pole Configuration: Molded case circuit breaker built for 2-pole applications, supporting multi-circuit protection in a single device.
- GFCI Protection: Ground-fault circuit interrupter functionality continuously monitors for current imbalances and trips the breaker to help prevent shock and fire hazards.
- AC Voltage Compatibility: Designed for use on 120/208/240-Volt AC systems, supporting common commercial and industrial distribution configurations.
- Amperage Rating: Available in a 50-Amp configuration to match circuit load requirements for connected equipment and branch circuits.
- Molded Case Design: Molded case housing provides a durable, enclosed construction suited for panelboard installation.
- Leviton Engineering: Backed by Leviton's electrical product engineering, built to support code-compliant installations in professional applications.
Technical Specifications
- list_batch: LEV-20260730
Typical Applications
- Commercial and Industrial Electrical Panelboards
- Load Center Circuit Protection
- Ground-Fault Protection for Branch Circuits
- New Construction Electrical Distribution
- Renovation and Panel Upgrade Projects
Why Leviton?
Leviton is a widely recognized name in electrical distribution products, and this 2-Pole GFCI Molded Case Circuit Breaker reflects that standard with dependable ground-fault protection built into a durable molded case housing. For electrical professionals specifying breakers for 120/208/240-Volt AC systems, Leviton offers a consistent option for panelboard protection in commercial and industrial installations. Choosing Leviton helps support reliable, code-compliant electrical distribution across new construction and upgrade projects alike.
Manufacturer Resources
Technical Information
Product Specs
- Product Type:
- GFCI/AFCI Circuit Breaker
- Amperage Rating:
- 50A
- Voltage Rating:
- 208/240V
- Poles:
- 2
- Device Type:
- GFCI
- Department:
- Electrical
- Product Group:
- Circuit Protection
- Product Subgroup:
- Circuit Breakers
Leviton LB250-G – Frequently Asked Questions
1) What amperage and voltage is the Leviton LB250-G GFCI breaker rated for?
The Leviton LB250-G is a 50-amp, 2-pole GFCI molded case breaker rated for 208/240V AC systems, and the product description covers it for 120/208/240-volt AC distribution. That makes it a fit for a two-pole 240V branch circuit at 50 amps, such as equipment loads fed from a commercial panelboard.
2) Will a 2-pole GFCI breaker work for a single 120V circuit?
No. The LB250-G occupies two panel spaces and lands on two hot legs, so it is for 240V or 208V two-pole loads, not a single 120V branch circuit. For a single-pole 120V circuit you would need a 1-pole device instead, such as the Square D Multi9 C60 1-pole breaker rated 120V AC.
3) What is the closest alternative to the Leviton LB250-G if the circuit needs three poles instead of two?
The Leviton LB250-G is a 2-pole molded case breaker, so a three-phase circuit needs a 3-pole frame instead. The ABB A2N Series A2A150TT is a 3-pole molded case circuit breaker that is UL listed, and the ABB E150 Series is a 3-pole thermal magnetic circuit breaker. Note that neither is described as a ground-fault device, so if personnel-level ground-fault protection is the reason the Leviton was specified, a 3-pole substitute will not carry that function over.
4) Can a miniature circuit breaker be used in place of the Leviton LB250-G 50A 2-pole GFCI breaker?
They are different classes of device. The LB250-G is a molded case circuit breaker rated 50A with GFCI ground-fault protection on 208/240V. Miniature breakers such as the Square D Multi9 C60 1-pole C-curve unit for 120V AC, the Square D C60 UL489 DIN rail mount MCB, and the ABB ST200M to UL1077 are single-device miniature breakers, and the C60 and ST200M are DIN-rail style rather than panelboard molded case. A UL1077 device like the ST200M is a supplementary protector class, not a branch circuit breaker. For a 50A 2-pole ground-fault branch circuit, stay with the molded case GFCI breaker.
5) What do I order to get this Leviton GFCI breaker?
One part number covers it: Leviton LB250-G. There is a single model, the 50A 2-pole version, so there is no amperage or trip option to specify when ordering.
6) Can I use the LB250-G in a load center, or is it panelboard only?
Both. Leviton describes this molded case GFCI breaker for panelboard and load center protection in commercial and industrial distribution, including new construction and panel upgrade work. Confirm the breaker matches the bus and mounting of the panel you are installing into.
7) I need 3-pole ground fault protection for a three-phase motor load. Is this the right breaker?
No, the Leviton LB250-G is a two-pole device and will not serve a three-phase, three-wire load. For 3-pole molded case protection ZenSupply carries the ABB A2N Series 3-pole, the ABB XT4 Series 3-pole kit, and the ABB E150 Series 3-pole thermal magnetic breaker. Those are overcurrent devices, so if the job specifically calls for ground-fault sensing on three poles, check the device type against the spec.
8) Does this breaker mount on DIN rail?
The LB250-G is a molded case breaker built for panelboard and load center installation, not a DIN rail device. If your control panel needs DIN rail mounting, the Square D C60 UL489 miniature circuit breaker is the DIN rail mount option, and the ABB ST200M is a UL1077 supplementary protector in that same miniature format.
9) If the panel schedule only calls for overcurrent protection and not ground-fault, what molded case breaker can be used instead of the Leviton LB250-G?
The LB250-G carries GFCI ground-fault protection in addition to overcurrent protection, which is what you are paying for on that device type. Where the drawing calls only for thermal magnetic overcurrent protection, the Square D PowerPacT B thermal magnetic circuit breaker and the ABB E150 Series 3-pole thermal magnetic breaker are straight overcurrent molded case devices. Confirm pole count against the circuit, since the E150 is a 3-pole frame.
10) We use I-Line panelboards. Does the Leviton LB250-G fit, or is there a different breaker for that?
The LB250-G is a molded case breaker intended for panelboard and load center protection, but I-Line panelboards take a bolt-on I-Line style breaker specific to that bus. The Square D PowerPacT Q I-Line circuit breaker is the I-Line style device in the Square D line. Verify bus and mounting style against your panel before ordering either, since a molded case breaker is not interchangeable across different mounting systems.
11) Where can I get the full technical data on the Leviton LB250-G?
Leviton publishes a technical information sheet for this breaker, hosted with the product record, which covers the detail beyond the headline 50A, 2-pole, 208/240V GFCI rating.
12) What is the difference between the Leviton LB250-G and the ABB XT4 breaker kit?
The LB250-G is a complete 2-pole GFCI molded case breaker rated 50A for 208/240V. The ABB MBB33 is an XT4 Series 3-pole molded case circuit breaker kit, so it is both a different pole count and a kit-configured product rather than a single fixed device. Distributors ordering against a spec for a 2-pole ground-fault breaker should call out the Leviton part number specifically.
How fast can I get the Leviton LB250-G delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Leviton LB250-G come with a warranty?
Absolutely. The Leviton LB250-G is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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