Description
GESTRA AG
FLOWSERVE
NRS 1-50
LEVEL SWITCH
INPUT RATING: 24VDC, 100-240VAC, 7VA
FREQUENCY: 50/60HZ
OUTPUT RATING: 240VAC, PILOT DUTY: 2.0A
SURROUNDING TEMPERATURE: 40°C
USE 60/75°C CONDUCTOR,
USE NO.18-16 AWG WIRE SIZE ONLY.
TIGHTENING: TORQUE 0.79 NM OR 7 LB IN.
The Gestra Flowserve NRS 1-50 is a level switch with a 24 V DC and 100-240 V AC input rating, drawing 7 VA at 50/60 Hz. It forms part of the shipboard control equipment that monitors liquid level and switches an output in response, with the output contact rated 240 V AC at 2.0 A pilot duty. Wiring is specified for 18-16 AWG conductors rated 60/75°C, terminal tightening torque is 0.79 Nm (7 lb in) and the rated surrounding temperature is 40°C. The switch is supplied new without box.
Key Features
✓ Input rating 24 V DC, 100-240 V AC, 7 VA, 50/60 Hz
✓ Output rating 240 V AC, 2.0 A pilot duty
✓ Rated for 40°C surrounding temperature
✓ Uses 60/75°C conductors in 18-16 AWG only
✓ Terminal tightening torque 0.79 Nm (7 lb in)
Marine Applications
✓ Boiler and hot well level monitoring
✓ Tank level alarm and pump control circuits
✓ Cascade and drain tank level switching
Technical Support
Prota Marine provides technical support, repair and onboard installation for the level switch and the wider marine control system. Fault diagnosis on level switching circuits and commissioning support are also available.
