Square D H363NRB 100A 3P 600V Safety Switch, NEMA 3R, Fusible | AmpState

The Square D H363NRB 100A 3P 600V Safety Switch is a purpose-built disconnect and isolation device designed for point-of-use reliability. Whether you’re performing retrofit work or planning routine maintenance, this fusible, NEMA 3R-rated switch keeps your electrical system safely segmented when service is required, all while preserving part-number continuity for documentation and stocking.

• Three-pole, 100 amp, 600-volt capability: a robust disconnect suitable for industrial and commercial equipment.
• NEMA 3R enclosure: weather-resistant and appropriate for outdoor or damp locations, so you can install it where it’s needed most.
• Fusible design: supports selective protection and fault isolation with the appropriate fuses, helping to minimize downtime during maintenance.
• Part-number stability: H363NRB remains the consistent specification, simplifying retrofit projects and long-term inventory planning.
• Brand confidence: built by Square D, a trusted name in industrial electrical safety.

Use cases and scenarios

• Power isolation at the point of use for motors, pumps, conveyors, and other large loads, enabling safe maintenance without full system shutdown.
• Retrofit projects where keeping the same part number streamlines ordering, installation, and spare-parts planning.
• Seasoned electrical rooms and outdoor installations that demand reliable, weather-resistant disconnects.

Specifications at a glance

• Manufacturer: Square D
• Part Number: H363NRB
• Product Type: Safety Switch
• Amperage: 100 A
• Poles: 3
• Voltage: 600 V
• Enclosure: NEMA 3R
• Fusible: Yes
• Availability: AmpState

Need help confirming compatibility or finding the right fit for your panel schedule? AmpState can help verify that H363NRB matches your requirements and ensures a smooth installation—reach out for expert guidance and fast fulfillment.