"Square D EJB E-Frame Miniature Circuit Breaker, Bolt-On"

Square D EJB E-Frame Miniature Circuit Breaker, Bolt-On

The Square D EJB E-Frame Miniature Circuit Breaker is a bolt-on lighting panelboard circuit breaker engineered for use in Square D NF Panelboards. Available in 1-Pole and 3-Pole configurations, this device is rated 480Y/277VAC and delivers reliable short-circuit and overload protection with Switching Duty, HACR, and HID application ratings. Backed by cULus listing and TAA compliance, it is built for demanding commercial and industrial branch-circuit protection where dependable field-proven performance is required.

Key Features

• Pole Configuration: Offered in 1-Pole and 3-Pole versions to match a wide range of lighting panelboard circuit requirements.
• Bolt-On Connection: Designed for bolt-on mounting in Square D NF Panelboards for a secure, field-proven fit.
• Operational Voltage: Rated 480Y/277VAC for lighting panelboard branch circuits.
• Protection Type: Provides short-circuit and overload protection for connected loads.
• Circuit Breaker Application: Switching Duty rated, HACR rated, and HID rated for versatile lighting and HVAC circuit use.
• Electrical Connection: Aluminium lugs accept AWG 12...AWG 6 aluminium or AWG 14...AWG 6 copper conductors.
• Tightening Torque: 3.4-3.4 N.m across 2.5-16 mm² (AWG 14...AWG 6) terminal range.
• Visi-Trip Indication: Troubleshoot faster with Visi-Trip™ trip indication.
• Ambient Air Temperature: Rated for operation at 40°C ambient.

Certifications & Compliance

• cULus Listed
• TAA Compliant
• RoHS Exemption Documented
• Mercury Free

Technical Specifications

• Connection Type: Bolt On
• Device Short Name: EJB
• Warranty Period: 18 months
• Product Certifications: cULus
• Compliance: TAA
• Mercury Free: Yes
• Sustainable Packaging: Yes
• Packaging Made With Recycled Cardboard: Yes
• Without Single Use Plastic: Yes
• Serviceability: No
• ROHS Exemption Information: Yes

Typical Applications

• Lighting Panelboard Circuit Protection
• Square D NF Panelboard Systems
• Commercial and Industrial Electrical Installations
• HACR and HID Rated Circuit Applications
• Switching Duty Branch-Circuit Protection

Why Square D?

Square D EJB E-Frame breakers combine cULus-listed, TAA-compliant construction with Visi-Trip trip indication for faster troubleshooting in the field. Available in 1-Pole and 3-Pole configurations and built for Switching Duty, HACR, and HID applications, they deliver dependable short-circuit and overload protection engineered specifically for Square D NF Panelboards, giving electrical professionals a trusted bolt-on solution for lighting panelboard branch circuits.