421 - Single-Phase, Magnetic Motor Starter Trainer

Product Dimensions
(L x W x H)
19" x 19" x 25" (483 x 483 x 635 mm)
50 lbs. (22.5 kg)

Shipping Dimensions
(L x W x H)
20.75" x 23.5" x 30" (525 x 600 x 760 mm)
85 lbs. (32.5 kg)

This task-specific, motor control-related training device allows for training in the operational principles, wiring, fault troubleshooting and application of industrial single-phase, magnetic motor starters used in industry. The device is self-contained, allowing for individual study by a single student or a small student group. While often used independently, the training aid can be integrated with other products relating to PLCs and pilot devices, and related motor-driven mechanical systems.

A fundamental training system within a series of related motor control-focused products, this device is often used independently due to its common use in basic industrial equipment and systems seen in industry, and it’s on-board selection of common piloting components.

The training aid includes a welded aluminum baseplate, steel support structure and enclosure, aluminum motor mounting rails and an applicable industrial-duty single-phase, capacitor-start motor.

All wiring is accomplished through shielded banana-jack connections on the front panel face, rather than directly to individual components. Redundant safety systems are provided. Four instructor fault switches, creating common component faults are provided. Supplemental components such as a motor loading device and a piloting switch module can be added to expand the system’s wiring opportunities and capabilities.
Welded aluminum base assembly, using 1-1/2" square, 1/8" wall tubing.
Aluminum t-slotted mounting rails, allowing for attachment of tethered motor/baseplate assembly and connection to associated devices.
16-Gauge, formed-steel support structure, allowing for attachment to base assembly or alternate mounting bench products.
16-Gauge, formed-steel electrical enclosure.
Silk-screened 1/8" aluminum front panel face.
Powder-coated surfaces throughout.
On-board safety components, including:
Keyed instructor power switch(Rear of product).
Circuit breaker with provision for representative lock-out/tag-out.
Permanent, redundant internal grounding (not dependent on student wiring).
Pilot light and large emergency stop switch.
Internal electrical interlock, de-energizing power when accessing electrical enclosure.
Industrial-duty, 56-frame, 1/4 HP, 1140 RPM, single-phase motor.
3-Pole magnetic motor starter with n. o. auxiliary contact and overload relay.
On-board 16 mm motor start and stop switches.
Use of UL and CE certified electrical components throughout.
Color-coded, banana-jack receptacles for all motor leads, supply connections and control components.
Four instructor fault switches (rear of device, behind access panel).
Allows for attachment to optional control and mechanical devices directly and using optional integration bench products.
Packaging for shipment via motor freight.
#410-001 - Portable digital multimeter.
#410-001E - Portable Multimeter, Economy
#410-002 - Non-Contact Tachometer.
#410-100 - Prony Brake Assembly.
#420-500 - Use/Exercise Guide (Additional)
#420-500C - Use/Exercise Guide (On Disc) (Additional)
#420-500D - Use/Exercise Guide (Via E-mail) (Additional)
#420-PAC - Motor Control Fundamentals Training, Quick-Start Package (includes: #420, #421, #422, #423, #424, #425, #426, (2) #428, (2) #410-001E)
#562-000 - Textbook, "Electric Motor Repair" (Rosenberg/Hand).
#566-002 - Electrical Motor Controls (Additional)
* Shielded Patch Cord Set (21). * Use/Exercise Guide (abbreviated for #421). * Instructor and student wiring diagrams. * Related textbook (with purchase of four or more devices).
110/220 VAC - 50/60hz, single-phase.
The courseware, useful in both an instructor-led or self-directed format, the package includes a textbook on motors and motor control, and twenty-one illustrated, hands-on exercises.

Exercises include:

- #E420-S01, Introduction to motor control terminology. - #E420-S02, Wiring the single-phase, magnetic starter as a motor controller. - #E420-S20, Introduction to motor controls troubleshooting. - #E420-S22, Troubleshooting the single-phase magnetic starter motor controller.

These devices have been designed for professionals for use under controlled circumstances for training only. DAC assumes no liability for injury resulting from the use or misuse of this product.
Motor-driven rotating machines have inherent risks of injury. This device should be operated only in the company of professional training mentors or experienced industrial maintenance personnel.
In accordance with DAC’s established policy of continuous improvement, these specifications and product descriptions are subject to change without notice. This information is the latest technical information as of the time of viewing or printing.
This product includes multiple safety features, and suggested safety procedures, as there is potential for direct contact with energized AC circuits in use. Extreme care must be taken to follow written safety procedures carefully, and to ensure that no on-board safety components are tampered with by the user.