Square D SC-3 - 30A, 3-Pole, Disconnect Switch

The Square D SC-3 Disconnect Switch is built for dependable electrical isolation in demanding industrial and commercial environments. With a 3-pole design and a 30A rating, it provides a clean, safe shutdown path for equipment, supports lockout/tagout procedures, and stands up to daily operation with enduring durability.

Overview

The SC-3 is a purpose-built disconnect switch from Square D that delivers reliable, controlled isolation of electrical circuits. Its three-pole configuration ensures all active conductors are disconnected in a single action, reducing arc exposure and simplifying safety compliance for maintenance and service work.

Key Features

• Three-pole design: simultaneous disconnection of all hot conductors for complete circuit isolation.
• 30A amperage rating: appropriate for controlling motor loads and feeder circuits within its class.
• NEMA 1 enclosure: compact indoor protection suitable for dry environments such as control rooms and equipment rooms.
• Lockout/tagout friendly: supports rigorous safety procedures to prevent unexpected energization during service.
• Durable construction: designed for long-term reliability in active industrial settings.
• Easy access operation: straightforward manual switching to isolate equipment quickly when needed.

Ideal Use Cases

• Service disconnects for electrical panels, control cabinets, and small motor circuits up to 30A.
• Equipment isolation in maintenance bays where lockout/tagout procedures are routine requirement.
• Isolation points for temporary power distribution in warehouses, manufacturing floors, or commercial facilities.
• Incorporation into control schemas where a reliable, all-pole disconnect is preferred over multi-step shutdowns.

Why the SC-3 Stands Out

Unlike simpler disconnects that only interrupt select conductors, the SC-3 guarantees full isolation with its 3-pole design, helping you meet safety standards without extra wiring or accessories. Its indoor NEMA 1 enclosure protects the switching mechanism from dust and accidental contact in typical dry environments, while its robust build supports frequent operation and lockout/tagout cycles without compromising performance.

Practical Tips for Installation and Use

• Mount in a dry, accessible location within electrical rooms or equipment spaces to facilitate regular testing and safe maintenance.
• Pair with a padlock or lockout device to enforce lockout/tagout during service procedures.
• Verify clear visibility of the switch position and ensure labeling matches your safety protocols for quick, unambiguous isolation.
• Plan routine inspections to confirm mechanical action remains smooth and that enclosure seals remain intact in its intended environment.

Specifications at a Glance

• Amperage rating: 30A
• Number of poles: 3-Pole
• Enclosure rating: NEMA 1
• Product type: Disconnect Switch
• Brand: Square D
• Model: SC-3