NORIS RI51 Limit Value Switch for Frequency
NORIS Automation RI51 (Part No. B83591#008) is a limit value switch for frequency and speed monitoring, designed to supervise rotational speed and frequency signals in industrial and marine applications. It provides reliable overspeed and underspeed monitoring with configurable switching outputs for alarms, shutdowns, and protective control functions
BRAND
NORIS Automation
TYPE
Limit Value Switch for Frequency / Speed (Tachometer Switch)
PART NO.
B83591#008
MODEL
RI51
Full Technical Specifications ▶
| Parameter | Value / Description |
|---|---|
| BRAND | NORIS Automation |
| TYPE | Limit Value Switch for Frequency / Speed (Tachometer Switch) |
| PART NO. | B83591#008 |
| MODEL | RI51 |
| Voltage Rating | 9...32 V DC Nominal operating range |
| Application | Marine engine speed thresholds, frequency monitoring, and overspeed/underspeed protection systems |
| IEC | Built to German/European industrial automation standards |
| Signal Output / Switching Range | Standard current interface loop operating at 0...20 mA |
| Relay Contact Ratings | 1.0 A at 30 V DC 0.5 A at 60 V DC 0.2 A at 220 V AC |
| Environmental Thresholds | -20°C to +70°C |
| Hardware Profile Traceability | internal engineering revision baseline Revision G |
| Live-Zero Sensor Protection | short-circuits and wire breaks |
| Galvanic Isolation | It provides complete electrical galvanic isolation between the input measurement signals, the power supply line (9...32 V DC), and the final relay output loop, shielding master PLCs or DCS setups from hazardous field surges |
| Termination Standard | DIN 46244 industrial tab connectors |
| Mounting Integration | TS35 top-hat rails |
| Made In | Germany |
| REF NO | 520 |
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