Description
The Square D EH14030 is a single-pole thermal magnetic circuit breaker designed for precise overcurrent protection in industrial and commercial applications. This model, part of Square D’s EH series, operates at 277 VAC with a current rating of 30 amps. The EH14030 offers a reliable interrupting capacity of 14 kA at 277 VAC and 65 kA at 120 VAC, making it suitable for high-performance electrical distribution systems.
Technical Specifications
| Condition |
New/Never Used Surplus |
| Brand |
Square D |
| Category |
Circuit Breakers |
| Part Number |
EH14030 |
| Subcategory |
Load Center Circuit Breakers |
| Series |
EH |
| Frame Type |
E-Frame |
| Poles |
1 |
| Phase |
1 |
| Amperage Rating |
30 A |
| Voltage Rating |
277 VAC |
| Interrupting Rating |
14 kA @ 277 VAC, 65 kA @ 120 VAC |
| Trip Type |
Thermal Magnetic |
| Functions |
Long-Time and Instantaneous Trip |
| Mounting Type |
Plug-In |
| Connection Type |
Plug-In Terminals |
| Wire Range |
#14–#8 AWG (Al/Cu) |
| For Use With |
NEH Panelboards |
| Operating Frequency |
50/60 Hz |
| Temperature Rating |
40°C |
| Certifications |
UL Listed |
| Country of Origin |
USA |
| Weight |
0.19 kg (0.42 lb) |
Information About
EH14030
The EH14030 is part of the Square D™ E-Frame series, known for its compact design and dependable molded case construction. It features a plug-in connection system for quick installation into NEH panelboards and uses a thermal magnetic trip unit for effective overload and short-circuit protection. The breaker supports wire sizes from 14 to 8 AWG (aluminum or copper) and is rated for operation in environments up to 40°C. Its design ensures compatibility with a variety of commercial and light industrial electrical systems requiring precise circuit control and high interrupting capacity.
Key Features:
- Thermal-Magnetic Protection: Combines thermal and magnetic trip elements for overload and fault protection.
- High Interrupting Ratings: Rated 14kA at 277VAC and 65kA at 120VAC for superior fault tolerance.
- Plug-In Mounting: Simplifies installation into NEH panelboards.
- Compact Single-Pole Design: Saves panel space while maintaining reliable performance.
- Durable Construction: Molded case ensures mechanical strength and long service life.
- Wide Wire Compatibility: Accepts #14 to #8 AWG aluminum or copper conductors.
UL Certified: Complies with industry safety and performance standards.
The EH14030 delivers the reliability and precision required for safe power distribution and dependable protection in industrial and commercial systems.
