Timeguard IS4N-40AC Weathersafe Yellow 40A IP65 4-Pole Rotary Isolator Switch

Timeguard IS4N-40AC Description

The Timeguard IS4N-40AC AC Rotary Isolator Switch delivers rugged performance and professional-grade isolation for 40 A AC circuits, making it ideal for general power distribution, maintenance isolation, HVAC systems, motor feeds and other demanding electrical applications. Built with a robust IP66 thermoplastic enclosure this isolator is dust-tight and protected against powerful water jets, ensuring reliable operation in exposed, outdoor or heavy-duty environments.

Engineered for ease of installation and long-term durability, the IS4N-40AC features on-load switch disconnectors to allow safe disconnection under load and a lockable rotary switch to help prevent unauthorised operation. The interlocked front cover can only be removed when the switch is in the OFF position — enhancing user safety during installation and maintenance. Multiple M25 threaded cable entry knockouts and rising clamp terminals with up to 16 mm² cable support provide flexible wiring options for varied installation requirements.

Whether used on distribution boards, outdoor panels, machinery feeds or utility circuits, the IS4N-40AC combines solid performance, safety and weather resistance in a single professional solution — backed by Timeguard’s 3-year guarantee.

Timeguard IS4N-40AC Features

• IP66 weatherproof rating — total protection against dust ingress and powerful water jets for exposed environments.
• 4-pole AC rotary isolator switch for full isolation of multi-pole AC circuits.
• 40 A AC current rating — suitable for heavy-duty and high-load applications.
• Tamper-proof lockable rotary switch to help prevent unauthorised operation.
• Interlocked front cover removable only in the OFF position for enhanced safety.
• On-load switch disconnectors allow safe circuit disconnection under load.
• Tough thermoplastic construction — durable and corrosion-resistant.
• Multiple M25 threaded cable entry knockouts for flexible conduit and wiring options.
• Rising clamp terminals supporting up to ~16 mm² cable capacity.
• Large enclosure space for easier cable routing and clean terminations.
• Switch removable from assembly for quick first-fix and servicing access.
• 230 V AC mains compatibility with standard UK electrical systems.
• Complies with BS EN IEC 60947-3 safety and performance standards (typical for isolators in this range).
• 3-year manufacturer guarantee for peace of mind.