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.
