Eaton AHMC340C-3 Manual Motor Controller - cULus Listed
Part Number: AHMC340C-3
Quick Summary
The Eaton AHMC340C-3 manual motor controller provides panel-mounted control for 3-phase motors up to 40 A at 600 V. When field wiring or maintenance causes trips, a side-wired, maintained-contact design reduces mis-wiring and downtime. This unit carries cULus listing, NAFTA compliance, and a NEMA 3R enclosure for reliable operation in harsh environments. Designed for industrial automation, it simplifies installation in control panels, helps meet safety standards, and supports efficient motor control strategies. Built for durability and straightforward integration, it serves as a dependable component in modern electrical panels and motor-control schemes.
Product Information
Extended Description
AHMC340C-3 Eaton: Eaton manual motor controller, #14-8 AWG, 40A, Panel, 600V, Side wired, Maintained contact, Gray, NEMA 3R, Enclosure: Copperless aluminum, Three-pole, Three-phase, Toggle switch, Copper-alloy terminal, Single-throw, Glass-filled nylon
Product Name
Eaton manual motor controller
Catalog Number
AHMC340C-3
UPC
040893662688
Product Length/Depth
9 in
Product Height
5.74 in
Product Width
7.01 in
Product Weight
3.63 lb
Compliances
NAFTA
Certifications
cULus Listed
Enclosure
NEMA 3R
Type
Manual motor controller
Amperage Rating
40A
Voltage rating
600 V
Number Of Poles
Three-pole
Phase
Three-phase
Enclosure material
Copperless aluminum
Application
Industrial
Device grade
Industrial
Wiring method
Side wired
Contact type
Maintained
NEMA Rating
3R
Switch type
Toggle switch
Mounting method
Panel
Closure type
Maintained
Number of positions
2
Allowable wire size
#14-8 AWG
Material
Glass-filled nylon
Termination style
Side wired screw and clamp
Throw
Single-throw
Terminals
Copper-alloy, brass screw
Color
Gray
Feature: 40 A at 600 V rating provides solid headroom for standard 3-phase motors in common industrial loads. Business impact: minimizes panel crowding and reduces the need for oversizing, lowering initial cost and ongoing energy waste. Application: suitable for plant conveyors and machining centers where reliable on/off control is essential. Feature: Three-pole, three-phase switching with maintained contact delivers consistent operation even after repeated cycling. Business impact: improves uptime and safety by ensuring predictable motor start/stop sequences. Application: panel-mounted motor starters in manufacturing lines and packaging equipment. Feature: Side-wired termination with copper-alloy terminals supports quick, secure wiring. Business impact: reduces installation time and field wiring errors, cutting commissioning costs. Application: control panels and remote motor locations with tight wiring channels. Feature: NEMA 3R enclosure and copperless aluminum housing offer corrosion resistance and outdoor suitability. Business impact: extends service life in harsh environments, lowering maintenance cycles. Application: outdoor enclosures, wash-down areas, and rugged factory floors. Feature: 2-position (on/off) toggle switch with fast panel mounting and 9 in depth. Business impact: simplifies retrofits and new installations, enabling faster project completion. Application: upgrade projects in existing control panels and new line installations. Feature: Compliance and certifications include cULus Listed and NAFTA. Business impact: accelerates regulatory approvals and cross-border procurement. Application: global manufacturing operations requiring safe, compliant motor control components.
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FAQs
Install the Eaton AHMC340C-3 as a panel-mount unit with side-wired termination to the linked 3-phase droop and main lines. Use the copper-alloy terminals and follow torque specs for the screw and clamp connections. Confirm alignment with the 9 inch depth and 7.01 inch width to fit standard enclosures, ensuring safe clearances and wiring routing.
The device supports up to 40 A and 600 V, is three-pole and three-phase, and uses maintained contact with a toggle switch. It uses a side-wired termination method and is designed for industrial loads with a NEMA 3R enclosure, making it suitable for panel installations in varied environments.
Yes. The AHMC340C-3 features a NEMA 3R enclosure and a copperless aluminum body that provides resistance to environmental exposure. This makes it appropriate for outdoor or wash-down areas in industrial facilities, reducing corrosion risk and extending service life.
The AHMC340C-3 is cULus Listed and NAFTA compliant. These certifications help ensure product safety, electrical compatibility, and cross-border procurement efficiency, enabling easier integration into global manufacturing operations and helping meet regulatory requirements in North America.
Expect lower downtime due to reliable maintained-contact operation and straightforward side-wired installation. The durable NEMA 3R enclosure and robust terminals reduce maintenance frequency, while cULus and NAFTA compliance minimize regulatory risk and procurement delays, supporting a favorable total-cost-of-ownership in industrial motor-control applications.