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Model 400 - Interval & Appliance Electromechanical Timers

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The M400 series electromechanical timer is a manual set, interval timer, with capabilities of 3 SPST circuits and 2 SPDT circuits. Where SPDT circuits are not required, 5 SPST circuits are available. All circuits (with the exception of the 1A circuit) are rated for up to 25 amp. The 1A circuit is rated at 15amp.

A two-way friction clutch allows the timer to be set to desired point in either direction. The timer motor is wired through one of the switches, and this switch opens to terminate the timed interval. The additional switches may be used to program the opening or closing of other circuits during the timed interval.

Cams are made to meet specific timing requirements and are not adjustable. A manual position or end of cycle signal can be provided. All terminals are 1/4” male spades, and extra isolated terminal can also be provided. Tapped holes are provided for panel mounting.

Contact Midwest Timer Service today to learn more about our Custom Interval Electromechanical Timer and Electromechanical Appliance Timers

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Precision Custom Interval Electromechanical Timer Solutions

OEMs seeking an adaptable interval timer will find the Model 400 excels as a custom interval electromechanical timer. Engineered for precision and durability, this model is designed to fulfill the most demanding timing and control requirements in appliance, industrial, and commercial environments. Featuring a manual-set interval function, the Model 400 supports a wide range of cycle times and operating intervals, making it a highly flexible solution for production lines.

400 Specifications

Model 400

Electromechanical Timer Model 400 Diagram
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Switch

All switches: 7.5 amp 250 VAC, 15 ampere 125 VAC, 1/2 HP 125/250 VAC, 25 amp 250 VAC (heater).

Terminals

.250" (6.35) or .187" (4.75) x .032" (.81) male spade. Additional isolated terminals available.

Time Ranges

Many standard cycle times and operating intervals available.

Motor

Permanent magnet, 24 VAC, 115 VAC or 230 VAC nominal voltage inputs at 50 Hz, 60 Hz or 50/60 Hz. Motor leads 4.5" (114.3) long standard.

Shaft Rotation

Clockwise or counterclockwise with bi-directional friction clutch standard.

Shaft Extensions

.248" (6.3) diameter steel shaft. Split, flatted, threaded, and other confirgurations available.

Mounting

Four extruded and tapped #8-32 holes 1.125" (28.58) and 1.625" (41.3) apart standard. Other configurations available.

Agency Listings

UL recognized and CSA certified.

Applications

Industrial battery chargers, household clothes dryers, commercial ovens, restaurant ovens, commercial heat pumps.

Minimum Order Size

100 timers

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123
156-158
156-158
175-177
175-177
180

Designed for Demanding Electromechanical Appliance Timer Application

Built with heavy-duty 1/4” male spade terminals and additional isolated terminal options, the Model 400 is easy to integrate into new or existing appliance timer assemblies. The timer’s permanent magnet motor can operate at 24 VAC, 115 VAC, or 230 VAC and is available in 50 Hz, 60 Hz, or dual-frequency versions, providing global flexibility for OEM designs. A bi-directional friction clutch allows for easy manual adjustment, while a variety of shaft and mounting configurations support seamless integration into diverse enclosures.

Multi Circuit Cam Interval Timer Versatility

The Model 400 stands out as a multi circuit cam interval timer, capable of supporting up to five distinct circuits. With options for three SPST and two SPDT circuits—or five SPST circuits where needed—OEMs can program multiple, independent switching actions within a single timed interval. Each cam is custom-manufactured to exact timing specifications, ensuring precise sequence control and operational reliability for complex devices.

Certified Quality & Lasting Performance

Our electromechanical appliance timers are UL recognized and CSA certified, delivering compliance and peace of mind to OEM partners. The Model 400’s rugged construction, high-current switching capacity, and custom cam design make it a top choice for demanding environments, delivering reliable interval timing for industrial battery chargers, commercial ovens and clothes dryers, and heat pumps.

The Model 400 combines the power of a custom interval electromechanical timer with the advanced features of a multi circuit cam interval timer, ensuring versatile, dependable performance in every application.

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Midwest Timer Service is here to build partnerships with OEMs and other industrial and commercial businesses. We aim to help companies find the right timer for any application. We specialize in large orders of electromechanical timers and synchronous motors. We don't sell single timers. Fill out the contact form and we will get back to you soon!
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