EJB14040 - 40 Amp Circuit Breaker

EJB14040 - 40 Amp Circuit Breaker

The 40-amp miniature circuit breaker delivers reliable protection for lighting and electrical circuits with a performance you can count on. Designed to snap directly into lighting panelboards, this single‑pole breaker manages up to 277 VAC while offering a high interrupt capacity that guards against overloads and short circuits. With its bolt‑on mount, solid trip unit, and long service expectancy, this breaker provides an effective way to safeguard home or business wiring setups — giving you peace of mind and reducing potential downtime. Whether you’re installing a new lighting panel or upgrading an existing one, this breaker is a straightforward, dependable choice that helps maintain electrical safety standards.

Key Features and Benefits

• High interrupt capacity: Up to 100 kA at 120 VAC (and 65 kA at 277 VAC), minimizing the risk of electrical faults and protecting connected equipment.
• Thermal‑magnetic trip unit: Provides accurate and responsive tripping in the event of overloads or short circuits, maintaining safety and preventing damage.
• Bolt‑on mounting system: Ensures a secure, vibration‑resistant installation that’s easy to set up and helps reduce long‑term maintenance effort.
• Durable build with long service life: Engineered to deliver reliable protection for decades, so you don’t have to worry about premature replacement.

Technical Specifications

• Current rating: 40 Amps
• Voltage rating: 277 VAC (operational)
• Interrupt rating: 100 kA (at 120 VAC) / 65 kA (at 277 VAC)
• Number of poles: 1 (single-pole)
• Dimensions:
  • Height: 5.66 in (143.8 mm)
  • Width: 0.98 in (24.9 mm)
  • Depth: 4.05 in (102.9 mm)
• Weight: Approximately 2.0 lb (0.91 kg)
• Connection type: Lug terminals, compatible with aluminum (AWG 12–2/0) and copper (AWG 14–2/0) wiring
• Mounting mode: Bolt‑on installation
• Trip unit rating: 1800 A

Material Compliance and Certifications

• Green Premium label: Reflects compliance with environmental performance standards.
• RoHS and REACH compliant: Ensuring that hazardous substances are minimized.
• UL listed: For high-intensity discharge applications, providing assurance of safety under rigorous conditions.
• CSA certified: Giving you confidence in its compliance with North American safety standards.

Where It Works Best

• This circuit breaker is ideal for lighting panelboards in a variety of settings — from residential homes to commercial facilities and light industrial environments. If you’re wiring or upgrading lighting circuits in apartments, offices, retail stores, warehouses, or small plants, this breaker offers dependable circuit protection. It’s especially suited for applications where high interrupt capacity and a secure bolt‑on mounting matter — like commercial lighting systems or mixed-use electrical panels where safety and reliability are essential.