Pepperl+Fuchs
Pepperl+Fuchs KCD2-SR-Ex2 – Isolated Barrier Switch Amplifier
Pepperl+Fuchs KCD2-SR-Ex2 – Isolated Barrier Switch Amplifier
Manufacturer part number: KCD2-SR-Ex2
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ENQUIRE NOWProduct Overview
The Pepperl+Fuchs KCD2-SR-Ex2 is a 2-channel isolated barrier switch amplifier in the space-saving 12.5 mm K-System housing. It transfers switching signals from NAMUR sensors or dry contacts in the hazardous area to two relay contact outputs in the safe area, with reinforced galvanic isolation between input, output and supply.
Powered at 24 V DC via the Power Rail or terminals, the module provides line fault detection on each input and is suitable for applications up to SIL 2 (SC 3) to IEC/EN 61508. Its narrow width allows high-density installation in marshalling and control cabinets, and its ATEX/IECEx certification includes mounting in Zone 2.
Key Features
- Manufacturer: Pepperl+Fuchs
- Model: KCD2-SR-Ex2
- Product type: Isolated Barrier Switch Amplifier
- 2-channel isolated barrier in a 12.5 mm wide housing
- Inputs for NAMUR sensors or dry contacts
- 2 relay contact outputs
- 24 V DC supply via Power Rail or terminals
- Line fault detection (LFD)
- Up to SIL 2 (SC 3) to IEC/EN 61508
- ATEX and IECEx certified, Zone 2 mountable
Technical Specifications
| Manufacturer | Pepperl+Fuchs |
|---|---|
| Part number | KCD2-SR-Ex2 |
| Product type | 2-channel isolated barrier / switch amplifier |
| Signal type | Digital input |
| Rated supply voltage | 19 … 30 V DC (Power Rail or terminals 9+, 10-) |
| Rated current | ≤ 46 mA |
| Power dissipation | ≤ 900 mW |
| Inputs | NAMUR to EN 60947-5-6 or dry contact; approx. 8 V DC / 8 mA |
| Line fault detection | Breakage I ≤ 0.1 mA, short circuit I ≥ 6.5 mA |
| Outputs | 2 × relay (terminals 5, 6 and 7, 8) |
| Contact loading | 250 V AC / 2 A / cos φ > 0.75; 30 V DC / 2 A resistive |
| Switching frequency | ≤ 10 Hz |
| Functional safety | SIL 2, SC 3 (IEC/EN 61508) |
| Ambient temperature | -40 … 70 °C |
| Degree of protection | IP20 |
| Dimensions | 12.5 x 119 x 114 mm (W x H x D), housing type A2 |
| Mass | approx. 100 g |
| Mounting | 35 mm DIN mounting rail (EN 60715) |
| ATEX | BASEEFA 06 ATEX 0092 X — II 3(1)G Ex ec nC [ia Ga] IIC T4 Gc, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I |
| IECEx | IECEx BAS 06.0025 X |
| Other approvals | UL/cULus (E106378) |
Specifications are taken from Pepperl+Fuchs manufacturer data. Always confirm critical values — particularly hazardous-area and functional-safety data — against the current datasheet, certificates and instruction manual before installation.
Applications
- High-density digital input marshalling
- NAMUR sensor and limit switch interfacing
- Valve position feedback in Ex areas
- SIL 2 safety loops
Installation and Compatibility
Mount on a 35 mm DIN rail; supply 24 V DC via the Power Rail or terminals 9+/10-. Field circuits connect to terminals 1–4 and the relay outputs to terminals 5–8. Functions are set with DIP switches. The device may be installed in Zone 2 under the Ex ec certification — follow the certificate and manual.
Frequently Asked Questions
What is the Pepperl+Fuchs KCD2-SR-Ex2?
The Pepperl+Fuchs KCD2-SR-Ex2 is a 2-channel isolated barrier switch amplifier in the space-saving 12.5 mm K-System housing. It transfers switching signals from NAMUR sensors or dry contacts in the hazardous area to two relay contact outputs in the safe area, with reinforced galvanic isolation between input, output and supply.
What supply does the KCD2-SR-Ex2 need?
19 … 30 V DC (Power Rail or terminals 9+, 10-).
How do I get a price for the KCD2-SR-Ex2?
This product is sold on a price on availability basis. Use the enquiry form on this page with your quantity and application details and the Valves UK team will reply with pricing and lead time.
Technical Documentation
- Pepperl+Fuchs KCD2-SR-Ex2 datasheet (PDF)
- KCD2-SR-Ex2 on the Pepperl+Fuchs website (certificates, manuals and drawings)
Related Products
- Pepperl+Fuchs KFD2-SR2-Ex2.W – Isolated Barrier Switch Amplifier
- Pepperl+Fuchs KCD2-STC-Ex1 – SMART Transmitter Power Supply
- View the full Pepperl+Fuchs range at Valves UK
Price and Availability
Price on Availability (POA)
Contact Valves UK for pricing, product availability and technical enquiries regarding the Pepperl+Fuchs KCD2-SR-Ex2. Please include your required quantity and any relevant application details when submitting your enquiry.
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