Multiquip ZTGK40EC4 Auto Transfer Switch NEMA1 400Amp 3 Pole

The Multiquip ZTGK40EC4 is a genuine OEM Auto Transfer Switch NEMA1 400Amp 3 Pole designed for NEMA1-rated equipment. As a direct OEM replacement, this switch is sourced to the original specification, ensuring correct electrical ratings and mechanical compatibility right out of the box. DHS Equipment supplies this part direct, so you can order with confidence that you are getting the correct component for your application.

Key Features

• Correct Electrical Rating — Rated at 400 amps across 3 poles, matching the original switch spec to maintain safe and stable power transfer capacity.
• NEMA1 Enclosure Compatibility — Built specifically for NEMA1-rated configurations, ensuring proper fit within the intended enclosure environment.
• Genuine OEM Component — Manufactured to Multiquip's original design tolerances for automatic transfer switching, not a generic substitute.
• Automatic Transfer Function — Enables seamless switching between power sources without manual intervention, keeping power flow consistent during source transitions.
• Electrical Safety Compliance — Transfer switches are a critical safety component in power distribution; using the correct OEM-rated unit helps ensure the system operates within its designed load and fault tolerances.

An automatic transfer switch monitors incoming power and automatically shifts the electrical load from a primary source to a secondary source when an outage or fault is detected — then switches back once primary power is restored. The 3-pole configuration handles all three legs of a three-phase supply, making it suitable for commercial and industrial power applications. A failed or incorrect transfer switch can result in delayed switching, load imbalance, or complete loss of backup power, all of which carry serious operational and safety consequences.

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.