M50ASR367 w/ Mounting Kit

M50ASR367 w/ Mounting Kit

Looking for a high-amperage, dependable circuit breaker for your heavy-duty panel setup? The M50ASR367 (with mounting kit) delivers 3‑pole, 800‑amp, 600 V A.C. fusible protection in a bolt‑in “branch panel switch” format — an ideal solution for industrial or commercial electrical systems where safety, current capacity, and reliability matter. This unit gives you a convenient, single‑unit circuit‑protection device that accepts Class L fuses and includes hardware for easy installation. Whether you're upgrading an existing system or outfitting a new panel, the M50ASR367 brings strong current-handling capacity and dependable protection in a clean, bolt-in design.

Key Features and Benefits

• High Amperage Capacity: Rated for 800 amperes — ready to handle substantial loads and heavy-duty circuits without sweating under pressure.
• Three‑Pole Protection: Provides three‑phase or multi-wire single-phase protection in a compact, unified package — excellent for commercial or industrial panelboards.
• Fusible Single‑Unit Design: Uses Class L fuses for dependable, fast-acting overcurrent protection. Ideal for systems where fuse replacement is preferred over breaker reset after major faults.
• Bolt‑In Panel Switch Format: The bolt-in design makes installation straightforward and secure, giving a solid mechanical anchor in panelboards.
• Mounting Kit Included: Comes complete with strap/mounting hardware for a smoother install — no need to source additional parts.
• Versatile Voltage Rating: At 600 V A.C., this breaker fits a wide range of industrial and commercial applications, giving flexibility for various power system configurations.

Technical Specifications

• Part Number: M50ASR367 (w/ Mounting Kit)
• Poles: 3
• Current Rating: 800 A
• Voltage Rating: 600 V A.C.
• Frame Type: M50A
• Type: Fusible, single‑unit, bolt-in panel switch
• Fuse Class: Accepts Class L fuses
• Mounting: Bolt‑in type — mounting hardware included
• Physical Weight: Approx. 23.5 lb (ship weight 23.5 lb)
• Typical Use: As a branch/feeder panel switch in commercial or industrial panelboards

Material Compliance and Certifications

• Industry Standards: This type of molded‑case / fusible panel switch is built to meet the standard expectations of safety and code compliance for heavy-duty circuit protection devices. In North America, circuit breakers and fused panel switches like this are often designed in accordance with safety standards such as UL 489 for molded‑case circuit breakers and fused switches.
• Fuse Compatibility: The use of industry‑accepted Class L fuses further ensures that overcurrent protection aligns with widely recognized electrical safety protocols. When installed according to local codes and the panel manufacturer’s guidelines, this unit supports safe operation and contributes to code‑compliant installations.

Where It Works Best

• Industrial and Commercial Panelboards: Perfect for large panel boards supplying heavy loads — such as in factories, warehouses, workshops, data centers, or large commercial buildings.
• Main Feeder or Sub‑feeder Circuits: Because of its 800 A capacity and 3‑pole configuration, it’s ideal for main feeders or high‑capacity sub‑feeders feeding large sections of a building or facility.
• Retrofits and Upgrades: When replacing older or lower‑capacity breakers/fusible switches, this heavy‑duty unit offers a clean, bolt‑in upgrade path — especially useful when building demand has increased.
• Fusible Preference Applications: For installations where fuse‑based protection is preferred (for example, for high fault currents, selective coordination, or fault isolation), the M50ASR367 is a good match.
• Reliable Long-Term Service: For environments where dependable, long-term current handling and stable protection matter — such as manufacturing facilities or commercial spaces with heavy equipment — this breaker helps keep the power delivery system safe and stable.