Jola Spezialschalter K. Mattil & Co. KG
Klostergartenstraße 11-20
D-67466 Lambrecht
Phone: +49 63 25 / 188-01
 
Level controllers Leakage detectors Other Jola products Search via product names Control of the chemical resistance
General information on Jola Quality management system Addresses: Jola and its agents Help on CD-ROM catalogue
Electrode relay

NR 3 A

  
Alternative supply voltages 
AC versions : terminals 10 + 12;
DC versions : 
terminal 10 = - 
terminal 12 = + :
- AC 230 V (delivered if no other supply voltage is specified in the order) or
- AC 240 V or
- AC 115 V or
- AC   24 V

- DC   24 V or
- DC   12 V (in these two cases, the unit must only be connected to a low safety voltage
                 which corresponds to the safety regulations relating to the application)

- further supply voltages on request

Power input: approx. 3 VA
Electrode circuit (terminals 4, 6): 2 terminals (safety extra low voltage SELV) acting on 1 relay
- no-load voltage: 9 V eff AC square wave voltage 10 Hz (safety extra low voltage SELV)
- short-circuit current: max. 0.5 mA eff
Controlled circuit (terminals 7,8,9): 1 single-pole potential-free changeover contact 
Switching status indicators: 
- 1 green LED lights when relay is energised
- 1 red LED lights when relay is not energised
Mounting orientation any
Temperature resistance 
- 20° C to + 60° C
Power input approx. 3 VA
Response sensitivity approx. 30 kOhm
Response sensitivity (electric conductance) approx. 33 µS 
Switching voltage AC max. 250 V
Switching current AC max.  4 A
Switching capacity AC max.  500 VA
Housing 
insulating material, 75 x 22.5 x 100 mm
Connection: terminals on top of housing
Protection class: IP 20
Mounting: clip attachment for U-bar to DIN 46 277 
and DIN EN 50 022
Documents Installation, operating and maintenance instructions [PDF] 
Electrode relay for U-bar mounting, with connection terminals on top of housing and with 
2 built-in LEDs for signalling the respective switching status.

Max. cable length between electrode relay and electrodes: 1,000 m.

EMC: for interference emission in accordance with the appliance-specific requirements for 
households, business and commerce as well as small companies, and for interference 
immunity in accordance with the appliance-specific requirements for industrial companies.
Measure drawing
Top