Eaton Cutler-Hammer DH321NGK 30A 3P Safety Switch, NEMA 1, Fusible | AmpState

Meet the Eaton Cutler-Hammer DH321NGK, a 30 Amp, 3-pole fusible safety switch crafted for dependable equipment disconnect and isolation at the point of use. Designed for everyday electrical work, this switch is a smart match for maintenance teams, panel builders, and spare inventories where having the exact part-number matters.

Why this safety switch matters

When servicing machinery or reworking control panels, you need a reliable, clearly identified disconnect that you can trust to safely isolate the circuit. The DH321NGK delivers quick, tactile operation and proven performance in indoor, dry environments. Its fusible design adds an extra layer of protection by accommodating standard fuses in a compact enclosure, helping you tailor overcurrent protection to the specific load while keeping service downtime to a minimum.

Specifications at a glance

• Manufacturer: Eaton Cutler-Hammer
• Part number: DH321NGK
• Type: Safety switch (fusible) for equipment disconnect
• Amperage: 30 A
• Poles: 3
• Enclosure rating: NEMA 1 (indoor, general purpose)
• Application: Point-of-use isolation and maintenance disconnect

Ideal use cases

• Maintenance and servicing of motors and control circuits where a safe, clearly labeled disconnect is required
• Panel building and retrofit projects that need a verified, standard-part solution
• Spare inventory for facilities that want to keep a direct part-number match on hand to minimize downtime

What sets DH321NGK apart

Uniqueness comes from its precise combination of 30 A capacity, 3-pole configuration, NEMA 1 enclosure, and fusible design in a compact form factor. This isn’t a generic switch—it’s a purpose-built safety device intended for reliable, repeatable disconnect operations at the point of use. The part-number fidelity simplifies maintenance planning and eliminates guesswork when ordering replacements, ensuring you get the exact Eaton performance every time.

Installation and compatibility

The DH321NGK is designed for straightforward integration into standard electrical assemblies and control panels. If you’re unsure about fit or compatibility for a specific application, AmpState offers support to help confirm whether this exact part matches your equipment and panel design. It’s the kind of proactive help that prevents downtime and keeps projects moving smoothly.

With the DH321NGK in your toolkit, you gain a dependable, purpose-built disconnect that combines familiar Eaton reliability with a clear, actionable path to safe, compliant isolation—backed by AmpState’s readiness to verify fit and keep your maintenance workflow uninterrupted.