Eaton / Cutler-Hammer DH368URK Heavy-Duty, High-Capacity Industrial Power Distribution

The Eaton/Cutler-Hammer DH368URK is a heavy-duty, non-fusible safety disconnect switch designed for high-capacity industrial power distribution. It is part of Eaton’s DH Series, which is engineered for demanding environments requiring a reliable, code‑compliant means of disconnect.

🔧 Core Technical Specifications

These values are confirmed across multiple distributors and manufacturer listings:

🧠 What This Device Actually Does

The DH368URK is a manual disconnecting means for large electrical feeders or equipment. Because it is non‑fusible, it does not provide overcurrent protection itself—protection must come from upstream breakers or fuses.

Its primary functions:

• Lockable, visible-blade isolation for maintenance safety
• Emergency power shutoff for large equipment
• Service disconnect for high‑ampacity feeders
• Outdoor‑rated disconnect for rooftop or exterior installations

This model’s 1200‑amp rating places it in the upper tier of safety switches, typically used in:

• Industrial plants
• Large commercial buildings
• Utility service entrances
• Motor control centers
• High‑capacity HVAC or mechanical systems

🏗️ Engineering Features That Matter

✔ Heavy‑Duty Construction

The DH series is built for repeated mechanical operation under load. The linkage and blade mechanisms are designed to maintain alignment and contact pressure even under harsh conditions.

✔ Visible Blade Design

When the switch is open, the blades are physically visible—an NEC requirement for many lockout/tagout procedures.

✔ NEMA 3R Enclosure

Rated for outdoor use, protecting against:

• Rain
• Sleet
• External ice formation

This makes the DH368URK suitable for rooftop disconnects and exterior service equipment.

✔ High Short‑Circuit Rating

A 200 kAIC withstand rating (when used with proper upstream protection) allows it to be installed in modern high‑fault‑current systems.

🧩 Where You’d Specify a DH368URK

Electrical engineers typically select this model when:

• The system requires a 1200A, 600V, 3‑phase disconnect
• Overcurrent protection is already provided elsewhere
• Outdoor installation is required
• A heavy‑duty, code‑compliant isolation device is needed
• The equipment must be manually and visibly isolated for maintenance

- Height: 70.97 in
- Width: 43.12 in
- Depth: 17.12 in

Shipping:
- Weight: 430 lb
- Dimensions: 72 in × 48 in × 21 in (these are crate dimensions, not the switch body)