NOARK B1H3C05 5A 3-Pole Miniature Circuit Breaker – 480Y/277V AC, UL 489
Reliable Industrial-Grade Circuit Protection | 10kA Interrupting Capacity | DIN Rail Mounting
The NOARK B1H3C05 is a professional-grade, 5-amp, 3-pole miniature circuit breaker engineered for dependable overload and short-circuit protection in commercial and industrial electrical systems.
Part of NOARK's Ex9 B1H Series, this UL 489 listed circuit breaker features thermal-magnetic protection, a C-curve trip characteristic, and a compact DIN rail mounting design. With a 10kA interrupting rating and a mechanical service life of 20,000 operations, it delivers dependable performance for electrical distribution and industrial control applications.
Key Features & Benefits
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5A, 3-Pole Protection: Designed for compatible three-phase electrical circuits.
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480Y/277V AC Rated: Suitable for appropriately rated commercial and industrial power distribution systems.
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10kA Interrupting Capacity: Provides high fault-current interruption capability.
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C-Curve Trip Characteristic: Magnetic trip range of 5–10 times rated current, suitable for applications with moderate inrush currents.
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Thermal-Magnetic Protection: Combines overload and short-circuit protection.
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UL 489 Listed: Certified for branch circuit protection applications.
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20,000 Mechanical Operations: Designed for long-term durability.
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10,000 Electrical Operations: Manufacturer-rated electrical service life.
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IP20 Protection Rating: Provides protection against finger contact with hazardous parts under specified conditions.
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35 mm DIN Rail Mounting: Allows straightforward installation in compatible electrical panels.
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Double Terminal Technology: Designed for efficient wiring, with captive connecting screws that simplify installation.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | NOARK |
| Series | Ex9 B1H |
| Part Number | B1H3C05 |
| Rated Current | 5A |
| Poles | 3 |
| Trip Curve | Type C |
| Rated Voltage | 480Y/277V AC |
| Frequency | 50/60 Hz |
| Interrupting Rating | 10kA |
| Protection Mechanism | Thermal-Magnetic |
| Electrical Life | 10,000 Operations |
| Mechanical Life | 20,000 Operations |
| Protection Rating | IP20 |
| Insulation Voltage | 500V AC |
| Impulse Withstand | 6kV |
| Mounting | 35mm DIN Rail |
| Dimensions | 2.10" W × 4.30" H × 3.11" D |
| Unit Weight | Approx. 0.93 lb |
| Certifications | UL 489, CSA C22.2 No. 5 |
Applications
The NOARK B1H3C05 is designed for use in compatible commercial and industrial electrical installations, including:
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Industrial control panels and automation equipment
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Three-phase power distribution systems
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Commercial electrical distribution panels
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HVAC and refrigeration equipment circuits
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Machinery and electrical control cabinets
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OEM electrical equipment
Built for Dependable Performance
NOARK's Ex9 B1 Series combines compact construction, recognized safety certifications, and convenient installation features. With its thermal-magnetic protection system, 10kA interrupting capacity, and durable mechanical design, the B1H3C05 is a practical solution for professional electrical applications.
Choose the NOARK B1H3C05 for reliable 5A, 3-pole branch circuit protection.
Please verify electrical ratings, installation requirements, and equipment compatibility before purchasing. Installation should be performed by qualified electrical personnel.