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"Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging"
The Pepperl + Fuchs KFA6-SR2-EX1.W is a high-quality switch amplifier designed to facilitate the safe and efficient transfer of digital signals from hazardous areas to safe areas. This one-channel isolated barrier is equipped with a 230 V AC supply and is compatible with both dry contact and NAMUR inputs. It features a relay contact output and is capable of line fault detection (LFD), enhancing operational reliability.
This switch amplifier is engineered to support a reversible mode of operation, allowing for flexibility in signal processing. The robust design ensures a mechanical life of 10^7 switching cycles, making it a durable choice for industrial applications. With a compact footprint of 20 x 119 x 115 mm, it is designed for easy mounting on a 35 mm DIN rail, ensuring a straightforward installation process.
The device is also suitable for use in safety-related applications, with a capability of up to SIL2 according to IEC 61508/IEC 61511 standards. The KFA6-SR2-EX1.W is meticulously crafted to provide reinforced insulation between input, output, and power supply, ensuring a high degree of electrical safety and compliance with international standards.
Ideal for a variety of industrial settings, this switch amplifier is a reliable component for system integrators and engineers looking to maintain signal integrity and safety in challenging environments.
| Specification | Description |
|---|---|
| Part Number | KFA6-SR2-EX1.W |
| Alternative Part Number | KFA6SR2EX1W |
| Manufacturer | Pepperl + Fuchs |
| Supply Voltage | 207 ... 253 V AC, 45 ... 65 Hz |
| Power Loss | 1 W |
| Power Consumption | ≤ 1 W |
| Signal Type | Digital Input |
| Input Connection | Terminals 1+, 2+, 3- |
| Rated Values | Acc. to EN 60947-5-6 (NAMUR) |
| Open Circuit Voltage | Approx. 8 V DC |
| Short-Circuit Current | Approx. 8 mA |
| Switching Point/Hysteresis | 1.2 ... 2.1 mA / Approx. 0.2 mA |
| Line Fault Detection | Breakage I ≤ 0.1 mA, Short-Circuit I > 6 mA |
| Pulse/Pause Ratio | ≥ 20 ms / ≥ 20 ms |
| Output Connection | Terminals 7, 8, 9 |
| Output Signal | Relay |
| Contact Loading | 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 40 V DC/2 A resistive load |
| Energised/De-energised Delay | Approx. 20 ms / Approx. 20 ms |
| Mechanical Life | 10^7 switching cycles |
| Switching Frequency | < 10 Hz |
| Electrical Isolation | Input/Output reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff |
| Ambient Temperature | -20 ... 60 °C (-4 ... 140 °F) |
| Degree of Protection | IP20 |
| Dimensions | 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 in), housing type B2 |
| Mounting | On 35 mm DIN mounting rail acc. to EN 60715:2001 |
| EC-Type Examination Certificate | PTB 00 ATEX 2081 |
| Approvals | ¬ II (1)G [Ex ia Ga] IIC, ¬ II (1)D [Ex ia Da] IIIC, ¬ I (M1) [Ex ia Ma] I |
| Input | Ex ia |
| Voltage Uo | 10.6 V |
| Current Io | 19.1 mA |
| Power Po | 51 mW (linear characteristic) |
| Maximum Safe Voltage Um | 253 V AC (Attention! Um is no rated voltage.) |
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Found the component i was looking for ad a great price. Great support from the staff as I was paying using a wire transfer. - Quick delivery and very good packaging.Adriano Tiberi
Extremely Helpful. Shipped me a replacement unit next day and i was up and running within 24 hours. Replacement new from machinery manufacturers was on a 7 day lead time.Sean Conlin
Found the part we needed at the best price. Spoke to Rob to make sure the part was actually in stock, as many companies don't actually have the part available to ship. It was in stock ready and the part was checked and shipped and received within a couple of days from their German stock. Would definitely use again and recommend.Chris Sentance
FIRST TIME WORKING WITH MARVO. THEY HAD WHAT I NEEDED AND TOOK GREAT CARE OF ME AND GOT MY ORDER OUT IMMEDITELY. WAS VERY IMPRESSED WITH THE SERVICE AND THE PERSON I SPOKE WITH. I WILL DEFINITELY WORK WITH THEM QGAIN IN THE FUTURE.Robert Cohen
Excellent service partially from Mark who stayed late to ensure the part arrived with me same day as this was a critical part for me even though this was my first time using Marvo. I will defiantly be using again.Josh Holt
Thumbs up to Rob for helping out with an urgent requirement we had on a Friday afternoon. The part we wanted was over in Europe and Rob went out of his way to get it ordered and on site here for the following Tuesday.City Bearings
Absolutely fantastic service. Rob was very helpful. Great communication. Requested part was shipped in no time.Konrad Eliaszuk
After ordering an urgent part from Marvo i received a great level of customer service and Rob was very helpful.Claire Hinchliff
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