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DPDT Series • Namco EA170

Snap-Lock® DPDT Extreme Duty Logic.

Heavy-duty 2NO/2NC contact logic designed for severe mechanical environments where precision locking and high torque are required.

Industrial Endurance

Extreme Torque,
Zero Compromise.

The EA170 series is the choice for severe mechanical loads where standard SPDT switches lack the capacity or contact density.

Contact Arcing

High-current industrial loads cause rapid contact wear and arcing in standard switches.

Torque Degradation

Repeated high-torque cycles lead to mechanical drift and trip-point instability.

Enclosure Breach

Cutting oils and caustic coolants bypass standard seals, leading to internal corrosion.

Mounting Inflexibility

Limited mounting options force awkward mechanical linkages and increase failure risk.

Performance Metrics

EA170
Operational Data

VariationTripResetTotalMax Torque
STANDARD SHAFT10°8°37°23 lb-in
SHORT TRAVEL6°30'4°36°32-45 lb-in
REVERSE SHAFT10°8°37°23 lb-in

Operating Lever is adjustable by 7°30' increments. Recommended travel for reliable contact seating is 13° (Standard/Reverse) or 7° (Short).

EA170 Operational Diagram
Mechanical Trip Logic Mapping
Namco EA170
DPDT Technology

Modular Control,
Severe Reliability.

Meets NEMA 1, 4 & 13 requirements. Contacts are made of silver alloy with a quick-make, quick-break shifting mechanism that is locked in position until actuated. Form "Z" contact arrangement provides true DPDT logic for complex control requirements.

DPDT Rocker Logic

Dual Pole, Dual Throw (2NO/2NC) configuration for versatile control circuit management.

Extreme Torque Performance

Engineered for 45 lb-in total torque capacity with precise Snap-Lock locking.

Modular Enclosure Logic

Meets NEMA 1, 4, and 13 as standard, with NEMA 4X and Geothermal options available.

High-Temp Specialized

Available configurations for extreme environments ranging from -40°C up to +150°C.

Continuous Current Rating

Contact Ratings

Voltage (Volts)AC (Amps)DC (Amps)
125 VAC20 A5 A
250 VAC15 A1.5 A
480 VAC10 A---
600 VAC5 A---

75-100% Power Factor Rating • Geothermal Ready

Configuration Guide

EA170
Ordering Structure

1
Mounting & Shaft
Standard, Front Shaft1
Wide, Front Shaft2
Long, Front Shaft3
Standard, Reverse Shaft4
Wide, Reverse Shaft5
Long, Reverse Shaft6
2
Switch Position
CW, Standard Travel1
CCW, Standard Travel2
Without Spring, Standard Travel3
CW, Short Travel4
CCW, Short Travel5
Without Spring, Short Travel6
Neutral Position7
3
Enclosure Type
Standard Enclosure1
Epoxy Sealed Switch with Cable2
Extreme Environment3
Tandem4
Standard Housing, Plastic Cover5
Sealed Switch with Connector6
Example Configuration

EA170-11100

Standard / CW Travel / Standard Enclosure

Dimensions & Blueprint Logic.

Industrial Scale Drawing • Standard, Wide, and Long Mounting

HOUSINGDie-Cast Zinc Alloy
WEIGHTApprox. 3.5 lbs (1.6 kg)
TEMP RANGE-20°C to +90°C (Standard)
HI-TEMP OPTION0°C to +150°C
LO-TEMP OPTION-40°C to +90°C
Standard Mounting - Standard ShaftEA170 Dimensional Drawing Standard
Wide & Long Mounting StylesEA170 Dimensional Drawing Advanced
WIRING SPACESize 12 Wire Capacity
CONDUIT1-11 1/2 NPT Threads
CONTACTSSilver Alloy / Form Z
LOCKINGRocker-Type Latches
SHAFTStandard / Reverse Options

Extreme Duty.
Snap-Lock Logic.