EJB34045 - 45 Amp Circuit Breaker
- 45 Amp
- 65k @ 480VAC; 100k @ 240VAC
- 3 Pole
Purchase Options: New In Box
EJB34045 - 45 Amp Circuit Breaker Description
EJB34045 - 45 Amp Circuit Breaker
When your dependable circuit protection is a priority, the Square D EJB34045 is built to get the job done. This 45 Amp, 3-pole E-Frame circuit breaker is engineered for use in compatible Square D NF panelboards, helping protect electrical systems from overloads and short circuits before they can cause costly damage or downtime. Its thermal-magnetic trip mechanism reacts to both prolonged overcurrent conditions and sudden faults, while the built-in trip indicator lets maintenance personnel quickly identify a tripped breaker.
Key Features and Benefits
- 45 Amp current rating
- Three-pole configuration for three-phase power distribution
- Bolt-on mounting for compatible Square D NF panelboards
- Thermal-magnetic trip unit protects against overloads and short circuits
- Built-in trip indicator helps speed troubleshooting
- Rated for up to 480Y/277V AC systems
- Interrupting capacity up to 100 kA at applicable voltages
- HACR and HID rated
- Compatible with both copper and aluminum conductors
- Calibrated for operation at 40°C (104°F)
Technical Specifications
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Manufacturer: Square D
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Catalog Number: EJB34045
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Frame Series: E-Frame (125A Frame EDB/EGB/EJB)
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Current Rating: 45 Amps
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Poles: 3
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Maximum Voltage: 480Y/277V AC
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Mounting Style: Bolt-On
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Trip Technology: Thermal-Magnetic
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Protection: Overload and Short Circuit
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Trip Rating: 1800 A
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Holding Current: 630 A
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Interrupting Rating:
- 100 kA @ 120V AC
- 100 kA @ 120/240V AC
- 100 kA @ 240V AC
- 65 kA @ 277V AC
- 65 kA @ 480Y/277V AC
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Wire Size:
- Copper: AWG 14–2/0
- Aluminum: AWG 12–2/0
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Terminal Type: Aluminum lugs
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Compatible Panelboards: Square D NF
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Dimensions:
- Height: 5.66 in. H
- Width: 2.94 in. W
- Depth: 4.05 in. D
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Weight: Approximately 4 lbs.
Material Compliance and Certifications
The Square D EJB34045 is cULus Listed, HACR rated, HID rated, and TAA compliant. It is calibrated for operation in ambient temperatures up to 40°C (104°F) and is manufactured to meet recognized industry standards for safety and performance. Installation should always follow applicable electrical codes and manufacturer recommendations.
Where It Works Best
The EJB34045 is commonly used in applications such as:
- Square D NF panelboards
- Commercial office buildings
- Manufacturing facilities
- Schools and universities
- Healthcare facilities
- Warehouses
- Retail buildings
- HVAC equipment
- HID lighting systems
- Electrical system upgrades and replacement projects
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.
Square D® is a registered trademark of Schneider Electric. Products sold are surplus, used, or refurbished and are NOT supplied by Schneider Electric or its affiliates.
Specifications
- Width:3.0
- Height:5.69
- Depth:3.44
- Poles:3
- Amperes:45
- A.I.C. Rating & Volts:65k @ 480VAC; 100k @ 240VAC
- Type:EJB
- Approx Dimensions:3.00"W x 5.69"L x 3.44"D
- Additional Notes:Thermal Magnetic, Bolt-on, Circuit Breaker for NF Panelboard. Includes Load-Side Lugs
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.
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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).