Pepperl+Fuchs WE77/EX2 | 1-Channel Isolator

Pepperl+Fuchs WE77/EX2 | Intrinsically Safe Signal Isolator – NAMUR Input, 1 Channel, DIN Rail

Overview

The Pepperl+Fuchs WE77/EX2 is a 1-channel signal isolator designed for processing input signals from NAMUR sensors or mechanical contacts located in hazardous (Ex) areas. It provides galvanic isolation between the field device and the control system and ensures safe signal transmission in compliance with intrinsic safety standards.

This compact unit is DIN rail mountable, ideal for process industries like oil & gas, chemical, and pharmaceuticals.

Key Features

• 1 NAMUR Input Channel – For hazardous area sensors or switches

• Output Type: Relay or transistor output (depending on version)

• Intrinsic Safety: Approved for use in Ex Zone 0/1

• Galvanic Isolation: Field to control side

• LED Indicators: For signal and power status

• Mounting: DIN rail (35 mm)

• Compact Design: Easy integration in control cabinets

Technical Specifications

• Model: WE77/EX2

• Input: NAMUR sensor/mechanical contact

• Output: Relay or transistor (depends on configuration)

• Supply Voltage: Typically 20–30 VDC

• Power Consumption: Approx. 1 W

• Operating Temperature: -20°C to +60°C

• Mounting: DIN rail (EN 60715)

• Housing Width: Approx. 20 mm

• Enclosure Rating: IP20

Applications

• Hazardous Area Automation – Sensor interfacing in Ex zones

• Process Control – Signal isolation and conditioning

• Oil & Gas, Chemical Plants – Reliable NAMUR integration

• Safety Systems – Galvanic separation and fault monitoring

Why Choose the WE77/EX2?

• Intrinsic safety compliance for Ex Zone 0/1

• Ideal for NAMUR sensors and contact closures

• Reliable and compact signal interface module

Order Now

In stock and ready for international shipping. 

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply