Multiquip ZTGK40FS4 Auto Transfer Switch NEMA3R 400Amp 4Pole

The Multiquip ZTGK40FS4 is a genuine OEM Auto Transfer Switch NEMA3R 400Amp 4Pole designed for NEMA3R-rated generator transfer applications. As a direct OEM replacement sourced from Multiquip, this switch is built to the exact electrical specifications required for safe and reliable automatic power transfer. It fits NEMA3R-configured equipment and installs as a direct replacement for the original component. DHS Equipment stocks this part to help keep your power systems operational with the correct Multiquip component.

Key Features

• OEM-Grade Electrical Specification — Rated at 400 amps across 4 poles, matching the original switch's current-handling capacity and pole configuration exactly as engineered by Multiquip.
• NEMA3R Enclosure Rating — Designed to meet NEMA3R standards for protection against weather exposure including rain, sleet, and external ice formation, suitable for outdoor generator installations.
• Automatic Transfer Operation — Engineered to detect power source changes and switch loads automatically, ensuring continuous power delivery without manual intervention during an outage event.
• Direct OEM Replacement — Replaces the original ZTGK40FS4 switch with no adaptation needed; wiring connections and mounting points correspond to the original installation.
• Electrical Safety Compliance — As a genuine Multiquip OEM component, this transfer switch meets the electrical safety standards required for automatic switching in generator power systems.

An automatic transfer switch monitors incoming utility power and, upon detecting a loss of supply, automatically switches the connected load over to a generator or alternate power source. The 4-pole configuration allows the switch to interrupt and transfer all circuit conductors simultaneously, which is critical in generator applications requiring full isolation of the power source. A failed or degraded transfer switch can result in loss of automatic switchover capability, leaving connected equipment without backup power or creating unsafe backfeed conditions.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.