Square D EJB34040 Molded Case Circuit Breaker – 40A – 3-Pole – 480Y/277V AC – Thermal-Magnetic – Bolt-On – EJB Series

The Square D EJB34040 is a 40A, 3-pole bolt-on molded case circuit breaker designed for use with compatible Square D NF Panelboards. It features a thermal-magnetic trip unit, signal indication for trip events, and a 480Y/277V AC system voltage rating.

The EJB34040 is CSA-rated, HID-rated, and HACR-rated, and is UL Listed as High-Intensity Discharge. It is calibrated for 40°C and includes aluminum lugs supporting specified aluminum and copper conductor sizes.

Specifications:

• Manufacturer: Schneider Electric / Square D
• Product Type: Molded Case Circuit Breaker
• Catalog No.: EJB34040
• Series: EJB
• Current Rating: 40A
• Number of Poles: 3-Pole
• Voltage Rating: 480Y/277V AC
• Protection Type: Thermal-Magnetic
• Mounting: Bolt-On
• Trip Unit: Thermal-Magnetic
• Signal Indicator: Trip indication
• Hold Current: 270A
• Trip Current: 875A
• Calibration Temperature: 40°C
• Lug Material: Aluminum
• Aluminum Conductor Range: AWG 12–6
• Copper Conductor Range: AWG 14–6
• Application: Square D NF Panelboards

Part Numbers & Identification:

• Manufacturer Part Number (MPN): EJB34040
• Catalog Number: EJB34040
• Product Family: Square D EJB
• Series: EJB
• Brand: Square D
• Manufacturer: Schneider Electric
• Product Type: Molded Case Circuit Breaker
• Model: EJB34040
• upc:785901397700

Compatibility:

Designed for use with compatible Square D NF Panelboards that accept EJB Series bolt-on molded case circuit breakers. The EJB34040 is a 3-pole, 40A breaker rated for 480Y/277V AC systems with thermal-magnetic protection.

The breaker includes aluminum lugs for specified aluminum and copper conductors. Always verify the exact panelboard model, approved breaker type, system voltage, pole configuration, conductor size and material, interrupting rating, and installation requirements before installation.

Certifications:

• CSA Rated
• HID Rated
• HACR Rated
• UL Listed as High-Intensity Discharge
• 40A Rated
• 3-Pole
• 480Y/277V AC Rated
• Thermal-Magnetic Protection
• Bolt-On Mounting
• 40°C Calibrated

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You may return items within 10 days of delivery for a refund.

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