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Home Products Pepperl Fuchs Safety Barrier

Pepperl+Fuchs KFD0-RO-2 | Isolated Repeater Power Supply for NAMUR Sensors, 24V DC

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Certification

"ACH has proven to be a reliable partner. Their products are genuine and high-quality, with competitive prices and on-time delivery. We trust them as our long-term supplier in automation."

—— Mohammed Al-Farsi, Procurement

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Procurement Manager

"For us, cost efficiency and authenticity are key. ACH helps reduce expenses while ensuring reliable quality and timely supply, making them a strong partner in our operations."

—— Supply Chain Director

"ACH offers quick response, flexible solutions, and fair pricing. The products are always genuine and reliable, and their friendly support makes cooperation smooth."

—— Operations Manager

"ACH provides genuine products with stable quality and fair pricing. Their fast response and reliable delivery give us confidence to continue working with them."

—— Engineering Manager

"We value ACH for their consistent quality and competitive pricing. Deliveries are always reliable, and their professional support makes procurement much easier for our team."

—— Procurement Head

Pepperl+Fuchs KFD0-RO-2 | Isolated Repeater Power Supply for NAMUR Sensors, 24V DC

Large Image : Pepperl+Fuchs KFD0-RO-2 | Isolated Repeater Power Supply for NAMUR Sensors, 24V DC Get Best Price

Product Details:

Place of Origin:	SG
Brand Name:	Pepperl+Fuchs
Certification:	ATEX
Model Number:	KFD0-RO-2
Document:	ACH-AB-P+F-E+H-IFM-ASCO-YOK...WA.pdf

Payment & Shipping Terms:

Minimum Order Quantity:	1
Price:	Negotiable
Packaging Details:	carton
Delivery Time:	Negotiable
Payment Terms:	T/T,XT,ALIPAY
Supply Ability:	100pcs per month

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Pepperl+Fuchs isolated repeater power supply

NAMUR sensor power supply 24V DC

Pepperl Fuchs safety barrier repeater

Pepperl+Fuchs KFD0-RO-2 | Isolated Repeater Power Supply for NAMUR Sensors, 24V DC

Pepperl+Fuchs KFD0-RO-2 isolated repeater/power supply for NAMUR proximity switches. 24V DC, 1-channel, relay output, Zone 0/1 / Div. 1, DIN rail mount, SIL 2.

Product Overview

The Pepperl+Fuchs KFD0-RO-2 (Order No. KFD0-RO-2) is an intrinsically safe isolating repeater / power supply from the KF series, designed to power and condition signals from NAMUR-type proximity switches or mechanical contacts installed in hazardous areas (Zone 0/1, Division 1). It provides an isolated relay output (1 CO contact) on the safe side and supplies the field device with a nominal 8.2 V DC / 1 kΩ NAMUR interface voltage. Commonly used to bring position feedback from Ex-i sensors (e.g., NJ2-V3-N) into non-Ex PLC inputs.

Technical Specifications (Electrical & Function)

Parameter	Specification
Order Number	KFD0-RO-2
Function	Isolated Repeater / Power Supply for NAMUR Sensors & Dry Contacts
Supply Voltage (Terminals 1-2)	20 … 30 V DC (Nominal 24 V DC)
NAMUR Input (Terminals 3-4)	8.2 V DC ± 5% @ 1 kΩ (IEC 60947-5-6 NAMUR)
Switch Threshold (NAMUR)	≤ 1.2 mA (Low / Sensor Active), ≥ 2.1 mA (High / Sensor Inactive)
Output Type	1 Changeover (CO / Form C) Relay Contact
Contact Rating	250 V AC / 2 A (Resistive), 30 V DC / 2 A
Response Time	≤ 20 ms (typ.)
Galvanic Isolation	3 kV AC (Input/Output/Supply)

Technical Specifications (Mechanical & Certification)

Parameter	Specification
Mounting	35 mm DIN Rail (EN 60715) — snaps onto top-hat rail
Housing Width	12.5 mm (KF compact series)
Connection	Screw Terminals (Cage Clamp style)
Operating Temperature	-20 … +60 °C
Protection Rating	IP20 (Enclosed in cabinet)
Hazardous Area Approval	ATEX / IECEx: [Ex ia] IIC / [Ex ia] IIB+H2 FM / cCSAus: Class I Div. 1 Groups A-D
SIL Capability	SIL 2 (IEC 61508 / IEC 61511)
Standards	IEC 60079-0, IEC 60079-11, EN 50270 (EMC)

Key Features

NAMUR Interface Built-In: Powers NAMUR sensors (e.g., Pepperl+Fuchs NJx-V3-N) directly with the correct 8.2V/1kΩ bias — no external resistors needed.
Galvanic Isolation: 3 kV isolation between field side, output side, and supply protects the control system from ground loops and transients.
Relay Output for Easy Interfacing: CO (Form C) relay contact works with standard PLC digital inputs, eliminating need for additional interposing relays.
Compact DIN Rail Footprint: 12.5 mm width conserves panel space in marshalling cabinets with many Ex-i loops.

Applications

Hazardous Area Position Feedback: Converting NAMUR valve-position switch or proximity sensor signals from Zone 1/Div.1 into safe-area PLC DI cards.
Intrinsic Safety Barrier: Providing Ex ia (Entity) protection for field contacts/sensors in flammable gas atmospheres.
Signal Conditioning: Cleaning up dry-contact or NAMUR signals and providing isolated repeat for long cable runs.
Safety Instrumented Systems (SIS): SIL 2 capable — suitable for SIF loops requiring proof-tested isolation.

Note: For 2-channel or transistor (solid-state) output versions, see KFD2-RO-2 (2-channel) or KFD0-SD-Ex1.… (solid-state). The KFD0-RO-2 is the 1-channel relay output model. Always verify the entity parameters of your NAMUR sensor match the barrier's Uo/Io/Po ratings before installation.

Pepperl+Fuchs KFD0-RO-2 | Isolated Repeater Power Supply for NAMUR Sensors, 24V DC 0

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About ACH

Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.

Frequently Ask & Questions

Are preferential prices available?

Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.

Are the Products Genuine OEM Units?

Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.

How will you arrange shipment?

We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.

What is the warranty of goods?

One-year Warranty.

How long is the logistics cycle of the product?

Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.

Ratings & Review

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

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Ahmed Raza

Pakistan May 2.2026

Helpful (1)

The KFD2-SR2-EX1.W safety barrier performs flawlessly, ensuring reliable protection in our plant’s hazardous zones. 再生成一条关于Pepperl+Fuchs的KFD2-SR2-EX1.W本安隔离栅的英文评价推荐一些不同风格的关于Pepperl+Fuchs的KFD2-SR2-EX1.W本安隔离栅的英文评价如何用英文评价突出Pepperl+Fuchs的KFD2-SR2-EX1.W本安隔离栅的特点？

Siti

Indonesia Apr 30.2026