Merz UL 508 Non-Fusible Disconnect Switches from AutomationDirect

October 15, 2020

AutomationDirect has added enclosed versions and non-enclosed DIN rail and panel/door mount versions of Merz disconnect / motor control switches.

Non-enclosed UL 508 / UL 60947 600VAC manual motor controller switches (from $15.25) are designed for snap-on DIN rail mounting, base mounting or front mounting in a door. The terminal screws are all accessible from one side. ML1 compact switches are available for applications from 16A to 40A. For more demanding applications loads, the ML2 to ML3 series accommodates loads from 63A up to 125A. The new series includes a complete line of accessories such as: operating handles, shafts, auxiliary contacts, terminal shrouds and more.

The Merz UL 508 disconnect switch with enclosure (starting at $50.00) is a non-fusible, UL 508 / UL 60947 manual motor controller 600VAC “suitable as motor” disconnect switch rated at 25-125A (3-pole) and 40-63A (3-pole + Neutral). The gray polycarbonate plastic enclosure with red handle is NEMA/UL Type 1, 3R, 4, 4X rated.

Also available from AutomationDirect are Merz rotary cam switches. Priced from $21.00, these motor transfer (changeover) cam switches allow smooth transfer of one motor operation to another, while motor reversing cam switches allow smooth motor direction change. Merz rotary cam switches, in ratings up to 80A, are available with up to 3 poles, with a 5kA SCCR rating.

Learn more by visiting: www.automationdirect.com/disconnect-switches.

Related Articles

Editor’s Pick: Featured Article

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s u-control 2000: The Automation Controller

Weidmüller’s scalable engineering software, u-control 2000, adapts individually to your requirements. And, the u-control is powerful, compact and fully compatible with Weidmüller’s I/O system u-remote. This article looks at what makes u-control the heart of your automation.

Programmable logic controllers (PLCs) are one of the main components of any automated system. A typical control system has inputs, outputs, controllers (i.e., PLCs), and some type of human interaction with the system, a human machine interface (HMI), for example.

Read More

Latest Articles

  • Teaching Machines to See: Why Sensor Fusion Demands a System-Level Approach

    March 16, 2026 By David Doria, Director of Engineering, Automated Driving, Magna Electronics, March 16, 2026 For years, progress in advanced driver assistance systems (ADAS) were driven by improving individual sensors. Higher resolution cameras. Longer-range radars. More precise lidars. Each step delivered incremental gains. But optimizing sensors in isolation only goes so far. As ADAS Read More…

  • Vention Raises the Bar for Automating Automation with New Funding and Solutions

    March 9, 2026 By Krystie Johnston Vention accelerates democratization of automation with new funding and GRIIPTM, sets sites on Enterprise clients, reaches more industries and geographies Vention is on a journey to democratize automation, and they are picking up speed. Already, in Q1 of 2026, they have made two announcements that will accelerate their trajectory Read More…