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Switch Amplifier 2-Pin

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KFA5-SR2-EX2.W General Description

KFA5-SR2-EX2.W Pepperl+Fuchs Switch Amplifier. 2-channel isolated barrier, 115 V AC supply, Dry contact or NAMUR inputs, Relay contact output, Line fault detection (LFD), Reversible mode of operation, Up to SIL2 acc. to IEC 61508/IEC 61511, Input: NAMUR sensor, Rated voltage: 103.5-126 V AC , 45-65 Hz, Output: relay, SIL/IEC 61508


KFA5-SR2-EX2.W connection



KFA5-SR2-EX2.W assembly



Key Features

  • 2-channel isolated barrier
  • 115 V AC supply
  • Dry contact or NAMUR inputs
  • Relay contact output
  • Line fault detection (LFD)
  • Reversible mode of operation
  • Up to SIL 2 acc. to IEC/EN 61508 / IEC/EN 61511

KFA5-SR2-EX2.W Datasheet

Welcome to check and download KFA5-SR2-EX2.W datasheet PDF here>>


place Singapore launch_date Mar 26, 2009
last_inspection_date 21 SEP 2022 rohs_version 2011/65/EU
supplier_cage_code D2063 htsusa
schedule_b ppap
aec False


Shipping Method

Our products are mainly transported and delivered by DHL, FedEx, UPS and other logistics partners on site -- Available to 200+ countries.

Delivery Time

The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

The following are the estimated delivery times of some logistics service providers.

  • DHL

  • Fedex

  • UPS

  • EMS

  • Registered Air Mail


We accept TT prepayment (bank transfer), paypal, credit cards, Western Union, Money Gram.

Checks and other instruments are not supported to pay for orders and customers are required to pay all possible fees, including sales tax,
customs fees, etc.

  • Wire Transfer

  • Paypal

  • Credit Card

  • Western Union

  • Money Gram


Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray

Ratings and Reviews

A**r Sep 29, 2020

I deny all the good i'm the enchantress

E**n Feb 21, 2020

Item as describe, good product, fast delivery, well packed, Thank you

A**n Sep 26, 2019

Connected to the arduino board, everything works. Thanks to the seller. I recommend.

L**n Jun 07, 2019

Thank you for your quick shipping.

L**e May 05, 2019

Sales sent more details clearly.



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Buying Guide

  • What is the lifespan of KFA5-SR2-EX2.W?

    The lifespan of KFA5-SR2-EX2.W depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of KFA5-SR2-EX2.W?

    You can find it with PDF Datasheet for KFA5-SR2-EX2.W on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of KFA5-SR2-EX2.W?

    Avaq has separate quality services with common quality inspection equipment for testing items, you can also fill out a sample form, our team will get in touch with you within 24 HOURS.

  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

  • Where can I check the delivery after the order is completed?

    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

  • Where to view my order of KFA5-SR2-EX2.W or my history order record?

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