EF3B050 - 50Amp Circuit Breaker
- 50 Amp
- 14k @ 600VAC; 14k @ 480VAC; 18k @ 240VAC
- 3 Pole
Purchase Options: Refurbished
EF3B050 - 50Amp Circuit Breaker Description
EF3B050 - 50Amp Circuit Breaker
If you're replacing an existing EF3 frame molded case circuit breaker, the EF3B050 is designed to provide the electrical ratings and physical compatibility needed to keep your power distribution system operating as intended. Rated at 50 amps with a 3-pole configuration, this breaker helps protect three-phase electrical circuits from overloads and short circuits in commercial and industrial applications operating at up to 600VAC.
Whether you're performing routine maintenance, replacing a failed breaker, or servicing existing electrical equipment, choosing the correct amperage, pole configuration, and interrupting rating is essential. Designed for operation in 40°C ambient conditions, the EF3B050 provides dependable overcurrent protection while helping maintain the safe operation of your existing electrical system.
Key Features and Benefits
- 50 Amp current rating for dependable overcurrent protection
- 3-pole configuration for three-phase commercial and industrial electrical systems
- Form, fit, and functional replacement for compatible EF3-frame applications
- Molded case construction built to last
- Interrupting ratings:
- 14kA @ 600VAC
- 14kA @ 480VAC
- 18kA @ 240VAC
- Designed for operation in 40°C ambient environments
- Compact dimensions help simplify installation in compatible equipment
- Suitable for protecting branch circuits, feeders, motors, and other three-phase electrical equipment
Technical Specifications
-
Part Number: EF3B050
-
Type: EF3 Molded Case Circuit Breaker
-
Poles: 3
-
Amperage: 50 Amps
-
Maximum Voltage: 600VAC
-
Interrupting Rating: 14kA @ 600VAC; 14kA @ 480VAC; 18kA @ 240VAC
-
Ambient Temperature Rating: 40°C
-
Dimensions:
- Width: 4.50 in.
- Height: 6.00 in.
- Depth: 3.63 in.
-
Approximate Shipping Weight: 5.25 lbs.
Material Compliance and Certifications
The EF3B050 molded case circuit breaker is manufactured for installation in compatible electrical distribution equipment and is designed to meet the published electrical ratings for its frame and configuration. Before installation, verify compatibility with your panel, switchboard, or switchgear, and ensure all work is completed in accordance with applicable electrical codes and manufacturer recommendations. Any required certifications or listings should be confirmed for the specific application.
Where It Works Best
The EF3B050 is commonly used in commercial and industrial electrical systems that require a 3-pole, 50-amp molded-case circuit breaker rated for applications up to 600 VAC. It is well suited for:
- Commercial buildings
- Industrial manufacturing facilities
- Distribution panels
- Switchboards
- Control panels
- Three-phase motor protection applications
- OEM electrical equipment
- Maintenance and repair of existing electrical systems
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:4.5
- Height:6.0
- Depth:3.63
- Poles:3
- Amperes:50
- A.I.C. Rating & Volts:14k @ 600VAC; 14k @ 480VAC; 18k @ 240VAC
- Type:EF3
- Approx Dimensions:4.50"W x 6.00"L x 3.63"D
- Additional Notes:40°C, Molded Case Circuit Breaker
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).