Description
The Square D HJA260501 is a 2-pole thermal magnetic molded case circuit breaker rated at 50 amps with a 600 VAC maximum voltage rating. It provides long-time and instantaneous trip functions for reliable overcurrent and short-circuit protection in power distribution systems. Designed with an I-Line plug-in connection, this unit offers fast installation, high interrupting capacity, and durable performance for industrial and commercial applications.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Protection |
| Part Number |
HJA260501 |
| Subcategory |
2-Pole Molded Case Circuit Breaker |
| Series |
PowerPact H |
| Type |
HJA |
| Amperage Rating |
50A |
| Voltage Rating |
600 VAC / 250 VDC |
| Poles |
2 |
| Interrupting Rating |
100 kA @ 240 VAC; 65 kA @ 480 VAC; 25 kA @ 600 VAC; 20 kA @ 250 VDC |
| Frame Type |
H-Frame |
| Mounting Type |
I-Line Plug-In |
| Trip Unit Type |
Thermal Magnetic (LI – Long-Time & Instantaneous) |
| Continuous Current Rating |
80% |
| Control Type |
Toggle |
| Wire Size Range |
AWG 14–3/0 (Copper/Aluminum) |
| Temperature Rating |
104°F (40°C) |
| Approvals |
UL Listed, CSA Certified, NOM, IEC 60947-2 |
| Suitability for Isolation |
Yes (IEC 60947-2) |
| Operating Frequency |
50/60 Hz |
| Rated Impulse Withstand Voltage |
8 kV |
| Protection Degree (Front Cover) |
IP40 |
| Ambient Temperature Range |
-25°C to +70°C (-13°F to +158°F) |
| Dimensions (H × W × D) |
9.73 × 2.94 × 4.8 in (247 × 75 × 122 mm) |
| Country of Origin |
Mexico |
| Weight |
4.85 lb (2.2 kg) |
Information About HJA260501
The HJA260501 is part of Square D’s PowerPact H-Frame series, engineered for superior circuit protection and flexibility in electrical distribution networks. It features a thermal-magnetic trip unit and a robust H-frame design that supports high breaking capacities up to 65 kA at 480 VAC. The breaker is compatible with I-Line panelboard systems, providing a reliable plug-on connection for quick setup and replacement. Certified under UL, CSA, and IEC standards, it ensures dependable operation in demanding industrial environments.
Key Features:
- High Interrupting Capacity: Rated up to 100 kA at 240 VAC and 65 kA at 480 VAC for exceptional fault protection.
- Thermal-Magnetic Trip Unit: Offers precise long-time and instantaneous protection for overload and short-circuit events.
- I-Line Plug-In Mounting: Allows tool-free installation and secure connection in I-Line panel systems.
- Durable H-Frame Design: Ensures long-term reliability and withstands heavy electrical loads.
- Wide Voltage Range: Operates up to 600 VAC and 250 VDC for versatile application compatibility.
- Flexible Wire Compatibility: Accepts AWG 14 to 3/0 aluminum or copper conductors.
- HACR Rated: Suitable for heating, air-conditioning, and refrigeration equipment.
- Global Compliance: Meets UL, CSA, NOM, and IEC standards for international use.
The HJA260501 delivers the reliability and precision required for safe, high-performance power distribution in industrial and commercial systems.
