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Pepperl+Fuchs KFA6-SR2-EX1.W
by Pepperl+Fuchs
Read verified buyer reviews ↓OverviewThe Pepperl+Fuchs KFA6-SR2-EX1.W (Part No. 103374) is a high-performance, single-channel isolated signal relay, meticulously engineered for critical applications in explosive environments. Designed with intrinsically safe input circuits (Ex ia), it flawlessly interfaces with both dry contact and NAMUR sensors, ensuring secure and dependable signal transmission. This device is crucial for maintaining operational integrity and safety in industrial process control, offering robust isolation between hazardous areas and control zones. Its adherence to SIL2 functional safety standards underscores its reliability for demanding safety-instrumented systems, while its DIN rail mounting capability allows for seamless integration into existing control panels with a compact footprint.Key Features Intrinsically Safe Input: Supports NAMUR sensors or dry contacts, providing versatile input compatibility for a range of field devices in hazardous environments. Dependable Output: Equipped with one Single Pole Double Throw (SPDT) relay contact, offering reliable switching capabilities for control circuits. Space-Saving Design: Features a compact 12.5 mm housing width, optimizing enclosure space on standard 35 mm DIN rails. Broad Power Supply: Operates efficiently with a 20–30 VDC power supply, ensuring stable performance across various industrial power configurations. Robust Output Capacity: Capable of handling loads up to 250 V AC / 2 A, suitable for diverse control applications. Superior Signal Protection: Provides 3-way electrical isolation (input/output/power), effectively preventing interference and ensuring signal integrity and safety. Advanced Safety Compliance: Certified for SIL2 functional safety according to IEC 61508, making it ideal for safety-critical applications requiring high reliability. Explosion Protection: Features Ex ia IIC intrinsic safety compliance, guaranteeing safe operation in environments with potentially explosive atmospheres. Clear Diagnostics: Integrated LED indicators for status and fault conditions provide immediate visual feedback for troubleshooting and operational monitoring. Technical Specifications Model Number: KFA6-SR2-EX1.W Part Number: 103374 Input Signal: Conforms to IEC 60947-5-6 (NAMUR) Response Time: Approximately 10 ms Voltage Drop: Low voltage drop design Housing Material: High-quality Polyamide Operating Temperature: -20°C to +60°C Dimensions (W x H x D): 12.5 x 119 x 114.5 mm Weight: Approximately 150 g Applications Industrial Process Control: Functions as a reliable relay interface for hazardous field signals, bridging the gap between field devices and control systems. Oil & Gas Industry: Ensures safe signal routing from potentially explosive (Ex) areas, crucial for maintaining operational safety and compliance. Chemical Plants: Provides intrinsically safe relay switching, vital for preventing ignition in environments where flammable substances are present. Water Treatment Facilities: Facilitates robust signal conditioning from remote sensors, ensuring accurate data acquisition and control in challenging environments. SIL2 Safety Systems: An integral component in functional safety-compliant control loops, enhancing the overall safety architecture of industrial processes. Why Choose This Model?The Pepperl+Fuchs KFA6-SR2-EX1.W stands out as a premier choice for industrial safety and control systems. Its Ex ia certification provides an essential layer of safety, ensuring secure operation in hazardous areas. Coupled with SIL2 functional safety compliance, this device guarantees high integrity for critical applications. Its compact design, broad operating temperature range, and versatile input/output capabilities make it an indispensable component for enhancing the reliability and safety of your industrial processes. Choose this model for dependable performance in the most demanding environments.Order NowSecure your industrial operations with the Pepperl+Fuchs KFA6-SR2-EX1.W isolated signal relay. Contact us today or add to cart for immediate dispatch.FAQWhat is the primary function of the KFA6-SR2-EX1.W?The KFA6-SR2-EX1.W is designed to provide an isolated interface between hazardous area sensors (like NAMUR or dry contacts) and safe area control systems, ensuring safe and reliable signal transmission.What does SIL2 compliance mean for this device?SIL2 (Safety Integrity Level 2) compliance indicates that the device meets stringent international standards for functional safety, making it suitable for use in safety-instrumented systems where a high level of reliability is critical to prevent hazards.Can this relay be used with any type of sensor?It is specifically designed for use with intrinsically safe NAMUR sensors or dry contacts, ensuring compatibility with standard industrial sensors in hazardous locations.What kind of power supply does the KFA6-SR2-EX1.W require?It operates efficiently within a broad power supply range of 20-30 VDC, making it adaptable to various industrial power configurations.Is the KFA6-SR2-EX1.W easy to install?Yes, its compact 12.5 mm width and DIN rail mounting capability allow for straightforward and space-saving integration into existing control panels.
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Pepperl+Fuchs KFA6-SR2-EX1.W
Overview
This is a genuine Pepperl+Fuchs component from the Isolators & Barriers family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Pepperl+Fuchs catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Pepperl+Fuchs automation ecosystem
- Engineered to integrate inside Isolators & Barriers installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Pepperl+Fuchs equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Pepperl+Fuchs catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Pepperl+Fuchs platform with documented conversion notes for the Isolators & Barriers family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Model Number: KFA6-SR2-EX1.W
- Part Number: 103374
- Input Signal: Conforms to IEC 60947-5-6 (NAMUR)
- Response Time: Approximately 10 ms
- Voltage Drop: Low voltage drop design
- Housing Material: High-quality Polyamide
- Operating Temperature: -20°C to +60°C
- Dimensions (W x H x D): 12.5 x 119 x 114.5 mm
- Weight: Approximately 150 g
Applications
- Industrial Process Control: Functions as a reliable relay interface for hazardous field signals, bridging the gap between field devices and control systems.
- Oil & Gas Industry: Ensures safe signal routing from potentially explosive (Ex) areas, crucial for maintaining operational safety and compliance.
- Chemical Plants: Provides intrinsically safe relay switching, vital for preventing ignition in environments where flammable substances are present.
- Water Treatment Facilities: Facilitates robust signal conditioning from remote sensors, ensuring accurate data acquisition and control in challenging environments.
- SIL2 Safety Systems: An integral component in functional safety-compliant control loops, enhancing the overall safety architecture of industrial processes.
Why Choose the KFA6-SR2-EX1.W?
The Pepperl+Fuchs KFA6-SR2-EX1.W stands out as a premier choice for industrial safety and control systems. Its Ex ia certification provides an essential layer of safety, ensuring secure operation in hazardous areas. Coupled with SIL2 functional safety compliance, this device guarantees high integrity for critical applications. Its compact design, broad operating temperature range, and versatile input/output capabilities make it an indispensable component for enhancing the reliability and safety of your industrial processes. Choose this model for dependable performance in the most demanding environments.
Availability & Shipping
- ▸In stock: KFA6-SR2-EX1.W ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every KFA6-SR2-EX1.W ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Pepperl+Fuchs
Machine down? We ship parts the same day.
New, surplus, and refurbished Pepperl+Fuchs inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.