Square D H363A Disconnect Switch, 100A, 3-Pole, 600V

Introducing the Square D H363A Disconnect Switch — a rugged, reliable solution for industrial electrical service, maintenance, and replacement projects. With a 100 A rating, 3-pole configuration, and a 600 V maximum, this isolator delivers clear, safe power shutdown across three phases, helping crews work efficiently and with peace of mind. Verify fit by part number H363A and your specific application requirements; our team is available to help confirm compatibility if you need it.

Key specifications and benefits

• Three-pole isolation provides complete disconnection of all three phases, minimizing risk during maintenance and servicing.
• 100 A amperage rating supports a broad range of industrial feeders and motor loads commonly found in manufacturing environments.
• 600 V maximum voltage suits typical three‑phase power distribution in industrial facilities, panels, and switchgear setups.
• Durable, purpose-built construction designed to endure demanding service environments where reliability matters most.
• Part-number-driven compatibility ensures you’re selecting the right switch for your system; confirm against H363A and your application requirements, and reach out if you’d like assistance with compatibility checks.

Ideal use cases

• Replacing or upgrading disconnects in production line panels, motor control centers, and distribution boards.
• Maintenance shutdowns where a secure, instantaneous isolation of all three phases is essential for worker safety.
• New equipment installations that require a compliant, rugged disconnect switch as part of the power-distribution strategy.

Why choose the H363A for your project

The H363A delivers a focused, field-ready solution for engineers and technicians who need dependable isolation without complexity. Its 3-pole design aligns with standard three-phase systems, while the 100 A rating covers many common industrial loads. When paired with proper installation practices and a correct part-number match, this switch helps minimize downtime and ensures a clear state of power isolation during service tasks.

Installation and compatibility tips

• Verify fit by part number and ensure the H363A aligns with your panel or gear’s mounting footprint and electrical requirements.
• Assess application requirements—confirm conductor sizes, enclosure clearance, and any industry or safety standards that apply to your facility.
• Plan for maintenance checks—keep a record of part-number verification and inspect connections during routine service to sustain reliable performance.