LGB1B050B - 50Amp Circuit Breaker

- 50 Amp
- 65k @ 277VAC; 100k @ 120VAC
- 1 Pole
Purchase Options:
LGB1B050B - 50Amp Circuit Breaker Description
LGB1B050B - 50Amp Circuit Breaker
The LGB1B050B is a 50A, 1-pole LGB G-frame circuit breaker for compatible low-voltage panelboards. It uses a thermal-magnetic trip unit and is rated 65 kA at 277V and 14 kA at 347V. If you're replacing a breaker in an existing panel, that's useful information right away.
This breaker has TC1GG20 load-side lugs only and accepts 8–1/0 AWG copper or aluminum conductors.
Key Features and Benefits
- 50A, single-pole configuration for compatible low-voltage panelboards
- LGB G-frame design helps identify the required breaker format in 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
- Accepts 8–1/0 AWG copper or aluminum wire
Technical Specifications
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Catalog Number: LGB1B050B
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Article Number: US2\:LGB1B050B
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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: 50A
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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 Type: 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: 887621219987
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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 also references WEEE (2012/19/EU) take-back obligations and provides information associated with REACH Article 33.
Where It Works Best
The LGB1B050B 50A circuit breaker is a practical fit for existing and legacy low-voltage panelboard equipment designed around the LGB G-frame configuration. It's especially relevant for maintenance jobs where the objective is to keep the equipment's required breaker arrangement intact.
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:50
- 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.
FREE ground shipping on breaker orders over $100 and all other items with orders over $500.
Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.
If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.
CIRCUIT BREAKER SUPERSTORE® offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).
Same Day Shipping
We strive to ship out your items within one business day.
In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.
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).


