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Active Isolation Barrier ENDRESS+HAUSER RN221N for Process Loops
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ENDRESS+HAUSER RN221N
Reliable signal isolation and conversion for safe separation of hazardous and safe-area process instrumentation in 4-20mA loops
| Brand | ENDRESS+HAUSER |
| Model | RN221N |
| Voltage | 24V DC (20-30V) |
| Country of Origin | Germany |
| Weight | 0.18 kg |
| Dimensions | 17.5 x 99 x 114.5 mm |
| Certifications | CE, ATEX, IECEx, FM, UL |
| SKU / MPN | RN221N |
| What’s in the box | RN221N isolation barrier, terminal blocks, mounting instructions, calibration certificate |
| Function | Active 1-channel isolation barrier with HART transparency |
| Input Signal | 4-20 mA / HART |
| Output Signal | 4-20 mA / HART |
| Galvanic Isolation | 1.5 kV AC between input, output, and power supply |
| Power Supply | 20-30V DC, loop-powered option available |
| Mounting Type | DIN rail (TS35) per EN 60715 |
Key benefits: HART-transparent transmission, galvanic isolation up to 1.5kV, compact DIN rail housing, wide 20-30V DC power range, ATEX/IECEx certified for Ex zones, easy wiring with pluggable terminals
Typical applications: Isolation of 4-20mA signals in hazardous areas, separation of field devices and control systems, HART signal transmission, refinery and chemical plant loops, level and flow measurement circuits, PLC and DCS input protection
Lifecycle: Active product, long-term availability (10+ years) with global Endress+Hauser support
1 review for Active Isolation Barrier ENDRESS+HAUSER RN221N for Process Loops
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Linda B. –
Tested the proximity switch, response time is spot on. Recommended for industrial use.