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A-T Controls Limit Switch, EW Series

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EW Series Limit Switch

Brand: A-T Controls, Inc

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The TRIAC® EX, EC/ES, EY, and EW Series hazardous location Limit Switches provide compact design and low cost for both visual and remote electrical indication of rotary valve/actuator position.

Their heavy duty design and wide variety of options make them ideal for multi-purpose limit switch applications.

Features

Twin Shaft Body Design
"Easy-set" Cams
Multiple Switch Options
Valve Position Indicator
1/2" or 3/4" NPT Conduit Entries
Standard NAMUR Mounting Brackets
L316 Stainless Steel Housing
UL Listed Type 4, 4X, 7 and 9, Explosion-proof and Weather-proof
Up to Four Conduit Entries with Extra Terminal Options

Specifications

Brand

A-T Controls, Inc

Actuator Type

Double-Acting Actuator (3-Position)
Spring Return Actuator (3-Position)

Approvals & Certifications

cUL, Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G
UL: Class I, Div. 1, Groups B, C, D, Class II, Div. 1, Groups E, F, G

Communication

AS-Interface Protocol
DeviceNET Protocol: Two Inputs, 100 mA Output

Conduit Connection

1/2” NPT
3/4” NPT

Cover Material

Stainless Steel

Electrical Connectors

4-20 mA Transmitter
Terminal Strip

Electrical Contacts

Gold-Plated: DPDT
Silver-Plated: SPDT & DPDT

Electrical Rating

0.1 A at 120 Vac Resistive: Mechanical SPDT Gold-Plated
0.25 A at 120 Vac, Resistance: Proximity Reed SPST, SPDT, DPDT
0.416 A at 48 Vdc, Resistive: Proximity Reed SPST, SPDT, DPDT
0.5 A at 24 Vdc Resistive/Inductive: Mechanical SPDT Silver-Plated
0.55 A at 24 Vdc, Resistive/Inductive: Proximity Reed (Bifurcated) SPST
1 A at 125 Vac, Resistive: Proximity Reed (with LED) SPST, Nova V3 Proximity SPDT Gold-Bifurcated Hermetically Sealed
1 A at 30 Vdc: Nova V3 Proximity SPDT Gold-Bifurcated Hermetically Sealed
1.5 A at 120 Vac: Proximity Reed (Bifurcated) SPST
1/4 hp at 125 Vac Resistive/Inductive: Mechanical DPDT Silver-Plated
5 A at 250 Vac Resistive/Inductive: Mechanical SPDT & DPDT Silver-Plated, Nova V3 Proximity SPDT Silver-Oxide Hermetically Sealed
5 A at 28 Vdc: Nova V3 Proximity SPDT Silver-Oxide Hermetically Sealed

Enclosure Finish

Black Polyester Powder-Coated
Electro-Polishing

Enclosure, Body Material

316 Stainless Steel

Environmental Protection

Explosion-proof
NEMA 4
NEMA 4X
NEMA 7
NEMA 9
Weatherproof

Indication

3-Way Block Center
3-Way Indicator [L or T Port]
Green Status Light
Red Status Light
Visual Indicator with Twin Shaft Design

Load

0.5 A, Max.
4 A, Max.

Mounting

ISO F05 Mounting Pattern
VDI/VDE 3845 Shaft

Output

4-20 mA

Sensor, Probe Connection

2-Wire, 5-200 mA, 20-140 V (AC or DC): Solid State Sensor
3-Wire, PNP, 5-100 mA at 30 Vdc, Amplified: Solid State Sensor

Sensor, Probe Type

Solid State Sensor

Supply Voltage

9-30 Vdc: Transmitter
NAMUR 2-Wire, 8 Vdc: Solid State Sensor

Switch Quantity

Up to 6 Switches

Switch Type

DPDT
Limit
Mechanical
Proximity Reed
Silver-Oxide & Gold-Bifurcated Hermetically Sealed
SPDT
SPST

Temperature Range

-40° to 80° C (-40° to 176° F)
-60° C (-76° F): Low Temperature Rating Down

Documentation

Brochure

Limit Switch Brochure pdf 3.0 MB

Manual

EY and EW Series Limit Switch Maintenance Manual Manual pdf 178 KB

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