EJB24050 | Square D 50A 2-Pole EJB Series Bolt-On Circuit Breaker
Square D · Circuit Breakers & Protection
Description The Square D EJB24050 is a two-pole miniature circuit breaker designed to provide dependable overcurrent and short-circuit protection in low-voltage electrical distribution systems. Rated at 50 amps, this breaker supports bolt-on mounting and thermal-magnetic trip technology for consistent performance in panelboard applications. It is engineered for use in Square D NF panelboards operating up to 480Y/277 VAC. Technical Specifications Condition New/Never Used Surplus Brand Square D Category Circuit Protection Part Number EJB24050 Subcategory Circuit Breakers Series EJB Product Type Miniature Circuit Breaker Rated Current 50 A Number of Poles 2 Phase Single Phase Trip Unit Technology Thermal-Magnetic Maximum Operating Voltage 480Y/277 V AC Breaking Capacity Up to 100 kA (voltage dependent) Mounting Type Bolt-On Electrical Connection Aluminum Lugs Ambient Operating Temperature Up to 104 °F (40 °C) Height 5.66 in (143.76 mm) Width 1.96 in (49.78 mm) Depth 4.05 in (102.87 mm) Weight 3 lb (1.4 kg) Information About EJB24050 The EJB24050 is part of Square D’s EJB series of E-Frame miniature circuit breakers built for compact, high-interrupting-capacity applications. This device features a thermal-magnetic trip unit that combines overload and short-circuit protection in a single mechanism, ensuring reliable operation under varying load conditions. It is compatible with NF panelboards and supports both copper and aluminum conductors across a wide AWG range. Designed for industrial and commercial electrical systems, the breaker incorporates bolt-on mounting and magnetic contactor operation for secure installation and stable performance. Key Features: 50 Amp Rated Current: Provides precise current protection for branch and feeder circuits. Two-Pole Configuration: Supports single-phase applications requiring dual-line protection. Thermal-Magnetic Trip Unit: Combines overload and short-circuit protection in one device. High Interrupting Capacity: Rated up to 100 kA at select voltages for fault resilience. Bolt-On Mounting Design: Ensures a secure mechanical and electrical connection to panelboards. Wide Conductor Compatibility: Accepts copper and aluminum conductors from AWG 14 to 2/0. UL, CSA, and CE Listed: Meets recognized international safety and compliance standards. The EJB24050 delivers the reliability and precision required for commercial and industrial power distribution protection.
Brand: Square D · Category: Circuit Breakers & Protection
Key features
- 50 Amp Rated Current: Provides precise current protection for branch and feeder circuits.
- Two-Pole Configuration: Supports single-phase applications requiring dual-line protection.
- Thermal-Magnetic Trip Unit: Combines overload and short-circuit protection in one device.
- High Interrupting Capacity: Rated up to 100 kA at select voltages for fault resilience.
- Bolt-On Mounting Design: Ensures a secure mechanical and electrical connection to panelboards.
- Wide Conductor Compatibility: Accepts copper and aluminum conductors from AWG 14 to 2/0.
- UL, CSA, and CE Listed: Meets recognized international safety and compliance standards.
Specifications
| Manufacturer part number | EJB24050 |
|---|---|
| Condition | New/Never Used Surplus |
| Brand | Square D |
| Category | Circuit Protection |
| Part Number | EJB24050 |
| Subcategory | Circuit Breakers |
| Series | EJB |
| Product Type | Miniature Circuit Breaker |
| Rated Current | 50 A |
| Number of Poles | 2 |
| Phase | Single Phase |
| Trip Unit Technology | Thermal-Magnetic |
| Maximum Operating Voltage | 480Y/277 V AC |
| Breaking Capacity | Up to 100 kA (voltage dependent) |
| Mounting Type | Bolt-On |
| Electrical Connection | Aluminum Lugs |
| Ambient Operating Temperature | Up to 104 °F (40 °C) |
| Height | 5.66 in (143.76 mm) |
| Width | 1.96 in (49.78 mm) |
| Depth | 4.05 in (102.87 mm) |
| Weight | 3 lb (1.4 kg) |
| Product type | Circuit Breakers |
Contact Safety Shops for pricing, delivery and project support in the UAE.