Circuit Breaker Modules
Pepperl+Fuchs KFD2-EB2.R4A.B
Class 1 Division 2
$230.00Available
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The BARTEC 4-channel Isolator Amplifier (Type 17-5521) provides safe galvanic isolation for connecting up to four NAMUR sensors, optocouplers, or mechanical contacts in hazardous environments. Certified for ATEX, IECEx, and CSA Class I, Zone 1 applications, it delivers reliable line monitoring with active open/short-circuit detection and clear status LED indication for oil and gas operations.
| Country of Origin | Germany (DE) |
| ATEX Rating | PTB 97 ATEX 1068 U / TÜV 97 ATEX 1211 X | II 2G Ex db e IIC Gb / II M2 Ex db e I Mb |
| UL Hazardous Area Rating | CSA 2011-2484303U | Class I, Zone 1, IIC / A/Ex d e [ia] IIC Gb |
The BARTEC 4-Channel Isolator Amplifier is an intrinsically safe interface designed to safely connect NAMUR sensors, optocouplers, and mechanical contact elements operating in hazardous locations. It features full galvanic isolation between inputs, power supply, and outputs according to EN/IEC 60079-11 standards, preventing dangerous high-voltage spikes from entering hazardous processing areas. Designed for critical process environments like oil, gas, and chemical facilities, this compact DIN-rail module delivers precise switching signals and maximum operational safety.
Engineered for high-density control panels, the module operates on 20 V DC to 30 V DC power and features integrated line fault detection that constantly monitors sensor wiring for open circuits and short circuits. Faults are instantly indicated via a dedicated group alarm transistor output and integrated channel LEDs. With high-frequency switching performance up to 1.5 kHz and high-quality thermoplastic DIN rail mounting, field technicians gain dependable signal transmission and swift visual diagnostics.
✅ ATEX, IECEx, and CSA Class I, Zone 1 certified for global hazardous area compliance
✅ 4-channel intrinsically safe NAMUR sensor/contact input processing
✅ IP66 rated module housing with IP20/IP30 terminal protection ratings
✅ High-frequency switching capability up to 1.5 kHz
✅ Dedicated transistor outputs for each channel plus group fault alarm output
✅ Front-facing status LEDs for immediate operational status and diagnostics
✅ Active line monitoring for open and short circuit detection
✅ Safe galvanic isolation between inputs, outputs, and supply voltage
✅ Compact 75 mm thermoplastic clip-on enclosure for standard TH35 DIN rails
| Feature | Details |
|---|---|
| Product Name | BARTEC 4-Channel Isolator Amplifier |
| Model / Type | Type 17-5521-4.../.... |
| Number of Channels | 4 intrinsically safe input channels |
| Compatible Inputs | NAMUR sensors, optocouplers, mechanical contacts |
| Supply Voltage | DC 20 V to DC 30 V |
| Max Current Consumption | 580 mA |
| Power Dissipation | Max. 2.4 W |
| Safety Ratings / Entity Parameters | Um = 253 V, U0 = 11.55 V, I0 = 30 mA, P0 = 86.4 mW |
| ATEX Certification | II 2G Ex db e IIC Gb / II M2 Ex db e I Mb (PTB 97 ATEX 1068 U / TÜV 97 ATEX 1211 X) |
| IECEx Certification | Ex db e [ia Ga] IIC Gb / Ex db e [ia Ma] I Mb (IECEx PTB 11.0083U / IECEx TUN 11.0027X) |
| CSA Certification | Class I, Zone 1, IIC / A/Ex d e [ia] IIC Gb (CSA 2011-2484303U) |
| Galvanic Isolation | Complete isolation between inputs, power supply, and outputs (EN/IEC 60079-11) |
| Output Type | Transistor outputs (Max. 100 mA per channel, non-short-circuit proof) |
| Output Signal Levels | 1-signal = Ub - 1 V; 0-signal = 0.9 V |
| Switching Frequency | Max. 1.5 kHz |
| Line Fault Monitoring | Always active; detects open circuit (<0.26 mA) and short circuit (>7.4 mA) |
| Diagnostics & Display | Front-panel LEDs for output states and dedicated group fault signal output |
| Housing Material | High-quality thermoplastics |
| Protection Class | IP66 (Module), IP20 (Terminals), IP30 (Terminals with cover) |
| Mounting | TH 35 x 7.5 (15) DIN rail (EN/IEC 60715) |
| Dimensions | Module width: 75 mm (94 mm x 91 mm) |
| Weight | 0.640 kg |
| Operating Temperature | -20 °C to +50 °C |
| Storage Temperature | -40 °C to +60 °C |
🔗 ATEX – II 2G Ex db e IIC Gb / II M2 Ex db e I Mb (PTB 97 ATEX 1068 U / TÜV 97 ATEX 1211 X)
🔗 IECEx – Ex db e [ia Ga] IIC Gb / Ex db e [ia Ma] I Mb (IECEx PTB 11.0083U / IECEx TUN 11.0027X)
🔗 CSA Certification – Class I, Zone 1, IIC / A/Ex d e [ia] IIC Gb (CSA 2011-2484303U)
🔗 Ingress Protection – IP66 (Module), IP20 (Terminals), IP30 (Terminals with cover) according to EN/IEC 60529
🔗 Download Datasheet
🔹 Oil & Gas
🔹 Chemical Plants
🔹 Mining
🔹 Labs
🔹 Manufacturing
📦 1x BARTEC 4-Channel Isolator Amplifier (Type 17-5521)
📦 1x Terminal Cover Set
📦 1x Documentation & Certification Kit
📦 Lead Time: 2 -3 weeks
📍 Shipping Terms: Worldwide / Expedited Options
💳 Payment Options: Credit Card, PayPal, Net 30 Terms
🔗 BARTEC Intrinsically Safe Control Units
🔗 BARTEC Resistive Coupling Element (Type 17-9Z62-0002)
🔗 Hazardous Area Signal Conditioners & Barriers
What type of field sensors can be connected to this isolator amplifier?
It supports up to 4 NAMUR proximity sensors, optocouplers, mechanical contacts, or standard switching elements in an intrinsically safe manner.
How does line fault monitoring work?
Line monitoring is continuously active and detects open circuits (< 0.26 mA) and short circuits (> 7.4 mA) on sensor lines, signaling errors via a dedicated transistor fault output and LEDs.
Is an additional component required for contact scanning fault monitoring?
Yes, for open/short-circuit monitoring with mechanical contact scanning, use the 1 kΩ / 10 kΩ resistive coupling element (Type 17-9Z62-0002).
What DIN rail size is required for installation?
The enclosure clips onto standard TH 35 x 7.5 (or 15) DIN rails according to EN/IEC 60715 and features a module width of 75 mm.
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