ED43B125 - 125Amp Circuit Breaker
- 125 Amp
- 18k @ 480VAC; 65k @ 240VAC
- 3 Pole
Purchase Options: Refurbished
ED43B125 - 125Amp Circuit Breaker Description
ED43B125 - 125 Amp Circuit Breaker
The Siemens ED43B125 is a 3-pole, 125-amp circuit breaker rated for 480V AC. It’s used in commercial and industrial panels where matching the original breaker’s specifications is important. The thermal-magnetic trip unit responds to overloads and short circuits, helping you protect circuits and connected equipment.
Built on the ED frame, this breaker is supplied with load-side lugs only, allowing wiring to be adapted to the installation. Its toggle handle makes manual operation simple, and the compact size (3 × 6.35 × 3.92 inches) fits most standard panel layouts. Rated for 18kA at 480V, the ED43B125 meets UL 489 and IEC 60947-2 standards.
Key Features and Benefits
- 125A, 3-pole molded case breaker: 125A, 3-pole molded case breaker.
- Rated for 480V AC systems: Rated for 480V AC systems.
- Thermal-magnetic trip unit for overload and short-circuit protection: Thermal-magnetic trip unit for overload and short-circuit protection.
- 18kA interrupting capacity at 480V AC: 18kA interrupting capacity at 480V AC.
- ED frame design for standard panel fit: ED frame design for standard panel fit.
- Load-side lugs installed (TA1E6125): Load-side lugs installed (TA1E6125).
- Toggle handle operation: Toggle handle operation.
- Compact size for easy panel integration: Compact size for easy panel integration.
-
Suitable for replacement and maintenance in commercial and industrial panels: Suitable for replacement and maintenance in commercial and industrial panels.
Technical Specifications
-
Catalog Number: ED43B125
-
Manufacturer Part Number: ED43B125
-
Poles: 3
-
Amperage Rating: 125A
-
Voltage Rating: 480V AC
-
Interrupting Capacity: 18kA at 480V AC
-
Trip Unit Type: Thermal-Magnetic
-
Frame: ED
-
Lug Configuration: Load-side only
-
Wire Range: 3–3/0 AWG Copper, 1–2/0 AWG Aluminum
-
Dimensions:
- Width: 3 in
- Height: 6.35 in
- Depth: 3.92 in
-
Weight: 3.79 lb
-
Country of Origin: Mexico
Material Compliance and Certifications
- UL 489 and IEC 60947-2 certified: UL 489 and IEC 60947-2 certified.
- RoHS and WEEE compliant: RoHS and WEEE compliant.
- REACH information available: REACH information available.
-
Suitable for commercial and industrial use: Suitable for commercial and industrial use.
Where It Works Best
- Commercial distribution panels
- Industrial facilities and manufacturing plants
- Branch and feeder circuit protection
- Maintenance and repair projects
- Retrofit and legacy panel applications
- Systems requiring a 125A, 3-pole ED-frame breaker
- The ED43B125 provides the correct form, fit, and function for replacing or maintaining existing electrical systems. Its standard ratings, ED-frame size, and thermal-magnetic protection make it a practical choice for keeping panels and circuits operational in commercial and industrial settings.
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:3.0
- Height:6.35
- Depth:3.92
- Poles:3
- Amperes:125
- A.I.C. Rating & Volts:18k @ 480VAC; 65k @ 240VAC
- Type:ED4
- Approx Dimensions:3.00"W x 6.35"L x 3.92"D
- Additional Notes:40°C, HACR rated, Sentron Style Molded Case Circuit Breaker. Bolt-On. Includes load-side terminals. Suitable for reverse feed.
Returns are easy
You may return unused items within 30 days of delivery for a full refund.
FREE shipping on breaker orders over $100 and all other items with orders over $500.
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).