LGB1B040B - 40Amp Circuit Breaker
- 40 Amp
- 65k @ 277VAC; 100k @ 120VAC
- 1 Pole
Purchase Options:
LGB1B040B - 40Amp Circuit Breaker Description
LGB1B040B - 40Amp Circuit Breaker
The LGB1B040B is a 40A, 1-pole LGB G-frame circuit breaker for compatible low-voltage panelboards. It uses a thermal-magnetic trip unit and carries interrupting ratings of 65 kA at 277V and 14 kA at 347V. If you're replacing a breaker in an existing panel, the 40-amp rating is only the starting point. The frame, trip type, interrupting capacity, lug arrangement, and physical dimensions must match the equipment you're working on.
Key Features and Benefits
- 40A, 1-pole configuration for compatible low-voltage panelboard applications
- LGB G-frame design makes it easier to identify the required breaker format
- Thermal-magnetic trip unit provides the specified overload and short-circuit protection
- UL Listed LGB frame
- Uses TC1GG20 load-side lugs only
- Accepts 8–1/0 AWG copper or aluminum wire
Technical Specifications
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Catalog Number: LGB1B040B
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Article Number: US2\:LGB1B040B
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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: 1
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Trip Type: Thermal-Magnetic
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Interrupting Rating at 277V: 65 kA
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Interrupting Rating at 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: 1"W x 5.4"H x 2.8"D
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Net Weight: 0.86 lb
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Country of Origin: Mexico
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UPC: 887621219963
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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 information identifies the LGB frame as UL Listed. Environmental documentation for the LGB1B040B also references WEEE (2012/19/EU) take-back obligations and includes information associated with RE.
Where It Works Best
The LGB1B040B 40A circuit breaker is most relevant when maintaining existing and legacy low-voltage panelboard equipment designed for an LGB G-frame breaker with this configuration. In that situation, there's no need to make the selection more complicated than it has to be. Start with the breaker already in the panel and compare the details.
Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.
Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.
Specifications
- Width:1.0
- Height:5.0
- Depth:3.06
- Poles:1
- Amperes:40
- A.I.C. Rating & Volts:65k @ 277VAC; 100k @ 120VAC
- Type:LGB
- Approx Dimensions:1.00"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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CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).