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The Switch Amplifier is a 2-channel isolated barrier designed for reliable signal processing in hazardous environments. It accommodates 24 V DC supply and supports dry contact or NAMUR inputs for versatile integration.
The Switch Amplifier falls within the category of intrinsic safety barriers, which are essential for protecting electrical circuits in potentially explosive atmospheres. These barriers serve to isolate and convert signals from field devices, ensuring safe operation while minimizing the risk of ignition in hazardous locations. This product is particularly well-suited for industrial applications where safety and reliability are paramount.
Commonly utilized in process automation and control systems, the Switch Amplifier supports a 24 V DC power rail and features relay contact outputs. Its design includes provisions for line fault detection (LFD), contributing to enhanced operational safety. With a compact housing width of 12.5 mm, it can be easily integrated into existing control panels, facilitating signal conditioning and monitoring in environments that adhere to SIL 2 requirements as per IEC 61508 standards.
| Connection | spring terminals |
| Configuration | via DIP switches |
| Input/power supply | reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff |
| Labeling | space for labeling at the front |
| Display elements | LEDs |
| Pulse/Pause ratio | min. 20 ms / min. 20 ms |
| Optional accessories | – power feed module KFD2-EB2(.R4A.B)(.SP) – universal power rail UPR-03(-M)(-S) – profile rail K-DUCT-BU(-UPR-03) |
| Power consumption | ≤ 600 mW |
| Input/Output | reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff |
| Connection | terminals 5, 6; 7, 8 |
| Control elements | DIP-switch |
| Mass | approx. 100 g |
| Connection side | field side |
| Signal type | Digital Input |
| Rated current | ≤ 30 mA |
| Minimum switch current | 2 mA / 24 V DC |
| Safety Integrity Level (SIL) | SIL 2 |
| IECEx approval | IECEx BAS 06.0025 |
| Output/power supply | reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff |
| Rated values | acc. to EN 60947-5-6 (NAMUR) |
| Safety note | If load voltage > 50 V, de-energize before removing the terminals. |
| Dimensions | 12.5 x 114 x 119 mm (0.5 x 4.5 x 4.7 inch) , housing type A2 |
| Ambient temperature | -20 … 60 °C (-4 … 140 °F) |
| Rated voltage | 19 … 30 V DC |
| Mechanical life | 107 switching cycles |
| Switching point/switching hysteresis | 1.2 … 2.1 mA / approx. 0.2 mA |
| Ripple | ≤ 10 % |
| Energized/De-energized delay | ≤ 20 ms / ≤ 20 ms |
| EU-type examination certificate | BASEEFA 06 ATEX 0092 |
| Degree of protection | IP20 |
| Open circuit voltage/short-circuit current | approx. 10 V DC / approx. 8 mA |
| Certificate | PF 06 CERT 0972 X |
| Connection | Power Rail or terminals 9+, 10- |
| Output/Output | reinforced insulation acc. to EN 50178, rated insulation voltage 300 Veff |
| Contact loading | 253 V AC/2 A/cos φ > 0.7; 126.5 V AC/4 A/cos φ > 0.7; 30 V DC/2 A resistive load |
| Line fault detection | breakage I ≤ 0.1 mA , short-circuit I ≥ 6.5 mA |
| Degree of protection | IEC 60529:2001 |
| Output II | signal ; relay |
| Electromagnetic compatibility | NE 21 |
| Connection | terminals 1+, 2-; 3+, 4- |
| Output I | signal ; relay |
| Power dissipation | ≤ 600 mW |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
| Switching frequency | ≤ 10 Hz |
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |
| Input/input | Basic insulation according to EN 50178, rated insulation voltage 300 Veff |
| Connection side | control side |
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