LGB2B040B - 40Amp Circuit Breaker
- 40 Amp
- 65k @ 480VAC; 100k @ 240VAC
- 2 Pole
Purchase Options: New In Box
LGB2B040B - 40Amp Circuit Breaker Description
LGB2B040B - 40Amp Circuit Breaker
When you're matching a breaker for an existing panelboard, the catalog number can save a lot of guesswork. The LGB2B040B is a 40A, 2-pole LGB G-frame circuit breaker with a thermal-magnetic trip unit. Its documented interrupting ratings are 65 kA at 480Y/277V and 14 kA at 600Y/347V. Those are key electrical specifications, but they're only part of the compatibility check. The LGB frame, two-pole arrangement, terminal configuration, conductor size, and breaker dimensions should also match the equipment.
Key Features and Benefits
- 40A, 2-pole configuration for compatible low-voltage panelboard applications
- LGB G-frame design gives technicians a specific frame configuration to verify against existing equipment
- Thermal-magnetic trip unit provides the specified overload and short-circuit protection
- UL Listed LGB frame
- Equipped with TC1GG20 load-side lugs only
- Accommodates 8–1/0 AWG copper or aluminum conductors
Technical Specifications
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Catalog Number: LGB2B040B
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Article Number: US2\:LGB2B040B
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Product Type: Low-Voltage Panelboard-Mount Circuit Breaker
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Frame: LGB / G Frame
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Ampere Rating: 40A
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Number of Poles: 2
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Trip Type: Thermal-Magnetic
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Interrupting Rating at 480Y/277V: 65 kA
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Interrupting Rating at 600Y/347V: 14 kA
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Terminal Arrangement: Load-Side Lugs Only
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Load Lug Type: TC1GG20
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Wire Range: 8–1/0 AWG
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Conductor Compatibility: Copper / Aluminum (Cu/Al)
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Dimensions: 2"W x 5.4"H x 2.8"D
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Net Weight: 1.852 lb
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Country of Origin: Mexico
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UPC: 887621220112
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Commodity Code: 8536200020
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Export Classification: ECCN EAR99 / AL N
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Dangerous Goods: No
Material Compliance and Certifications
The supplied manufacturer specifications identify the LGB frame as UL Listed. Environmental information for the LGB2B040B also references WEEE (2012/19/EU) take-back obligations and includes information associated with REACH Article 33.
Where It Works Best
The LGB2B040B 40A 2-pole circuit breaker is most relevant when maintaining existing and legacy low-voltage panelboards that require this particular LGB G-frame breaker configuration. In these applications, a close match matters. Two breakers can share an amp rating while differing in pole count, terminals, conductor range, dimensions, or interrupting ratings.
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Specifications
- Width:2.0
- Height:5.0
- Depth:3.06
- Poles:2
- Amperes:40
- A.I.C. Rating & Volts:65k @ 480VAC; 100k @ 240VAC
- Type:LGB
- Approx Dimensions:2.00"W x 5.00"L x 3.06"D
- Additional Notes:40°C, HACR rated, Molded Case Circuit Breaker, Panelboard Mount. Includes Load-Side Terminals - discontinued by the Manufacturer
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
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