HEB1B125B - 125Amp Circuit Breaker
- 125 Amp
- 65k @ 277VAC; 100k @ 120VAC
- 1 Pole
Purchase Options:
HEB1B125B - 125Amp Circuit Breaker Description
HEB1B125B - 125Amp Circuit Breaker
The Siemens HEB1B125B is a 125 Amp, single-pole molded case circuit breaker designed for compatible HEB (EG) frame low-voltage panelboards. When you're replacing a breaker in an existing electrical system, matching the original specifications is important — including the frame style, amperage, voltage rating, and terminal arrangement. This model uses a thermal-magnetic trip unit to help protect your circuits from overloads and short circuits while maintaining the intended configuration of compatible Siemens equipment.
Key Features and Benefits
- Siemens HEB (EG Frame) molded case circuit breaker
- 125 Amp current rating
- Single-pole configuration
- Thermal-magnetic trip unit
- Helps protect circuits from overloads and short circuits
- Rated for 277 VAC applications
- Load-side lugs included (TA1EG10)
- Accepts 8 AWG to 1/0 AWG copper or aluminum conductors
- Form, fit, and functional replacement for compatible HEB frame installations
- UL Listed
- Built to last for continued use in existing electrical systems
Technical Specifications
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Manufacturer: Siemens
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Catalog Number: HEB1B125B
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Product Type: Molded Case Circuit Breaker
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Frame: HEB (EG Frame)
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Poles: 1
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Current Rating: 125 Amps
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Voltage Rating: 277 VAC
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Trip Unit: Thermal-Magnetic
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Interrupting Rating: 65kAIC @ 277 VAC; 25kAIC @ 347 VAC
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Terminal Configuration: Load-side lugs (TA1EG10)
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Wire Range: 8 AWG to 1/0 AWG Copper/Aluminum
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Dimensions: 1" W × 5.5" H × 3" D
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Weight: 1.257 lb
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Country of Origin: Dominican Republic
Material Compliance and Certifications
- UL Listed
- Compatible with copper and aluminum conductors
- ECCN: EAR99
- Commodity Code: 8536200040
- WEEE Category 5
- Not classified as dangerous goods
Where It Works Best
The Siemens HEB1B125B is commonly used in commercial, industrial, and institutional electrical distribution systems that utilize compatible HEB (EG) frame panelboards. It is intended for maintenance and replacement applications where the existing breaker specifications need to be matched closely. Keeping the same frame style, amperage rating, voltage rating, and lug configuration helps maintain the original panelboard arrangement and supports continued operation of compatible electrical equipment.
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:5.5
- Depth:3.0
- Poles:1
- Amperes:125
- A.I.C. Rating & Volts:65k @ 277VAC; 100k @ 120VAC
- Type:HEB
- Approx Dimensions:1.00"W x 5.50"L x 3.00"D
- Additional Notes:40°C, HACR rated, Molded Case Circuit Breaker, Panelboard Mount. Includes Load-Side Terminals
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.
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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
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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).