MRX-Series

(formerly known as 802i-Series)

Ex-approved Reed Relays

Reed Relays to be used for the galvanic separation of intrinsically safe and non-intrinsically safe circuits with an Ex-approval by PTB-no. Ex-80/2029U according to DIN EN 50020. The MRX series is also suitable for circuits of the category ‘ia’ due to its peak voltage of 375 V.
Up to 4 form A switches or 1 form C switch are available according to the different casings.

Typical Applications

  • Test and measurement
  • Process automatization in the mining industry, chemical industry and refineries

Dimensions

Tolerance +/- 0.10mm (0.004 inch)

Dimension Drawing

Relay Data

Operating temperature (°C) -20/+85
Storage temperature (°C) -40/+105
Isolation coil / contact at 50 Hz (1 Min.) min. (kVAC) 2.5
Insulation coil / contact min. (Ohm) 1012
Life expectancy Dependent upon load, please refer to factory
Soldering time/temperature max. 5 sec./260 °C
Cleaning Fully sealed

 

Contact Data

Contact type 71 79 90 21
Contact form A/dry A/dry C/dry C/dry
Rated power max. (W) 10 10 3 5
Switching voltage max. (VDC) 200 220 VAC 28 VAC 100
Switching current max. (A) 0.5 0.5 0.25 0.25
Contact resistance max. (mOhm) 150 150 150 200
Insulation resistance (Ohm) 1010 1011 109 109
Breakdown voltage min. (VDC) 300 400 250 250
Operating time incl. bounce (ms) 0.8 0.8 0.5 1.0
Shock at 11ms max. (g) 50 50 50 50
Vibration at 2000 Hz max. (g) 20 20 20 20

Data at 140% pull-in energization and 20°C. Other switches on request.

Coil Data with contact form 1A/1C (Data at 25°C)

Contact form Switch type Nominal voltage
(VDC)
Coil resistance
+/- 10%
(Ohm)
Pull-in voltage
max.
(VDC)
Drop-out voltage
min.
(VDC)
Nominal power
(mW)
1A/1C 21
71
79
90
5 360 3.8 1.0 69
6 360 4.5 1.0 100
12 1300 9.0 2.0 111
24 5880 18.0 3.5 98

 

Coil Data with contact form 2A/4A (Data at 25°C)

Contact form Switch type Nominal voltage
(VDC)
Coil resistance
+/- 10%
(Ohm)
Pull-in voltage
max.
(VDC)
Drop-out voltage
min.
(VDC)
Nominal power
(mW)
2A 71
79
5 250 3.8 1.0 100
6 250 4.5 1.0 144
12 890 9.0 2.0 162
24 3500 18.0 3.5 165
4A 71
79
5 125 3.8 1.0 200
6 125 4.5 1.0 288
12 500 9.0 2.0 288
24 1780 18.0 3.5 324

 

Diagram view from component side (pitch 2.54 mm / 0.1 inch)

Diagram 1A Diagram 1C
Footprint Footprint
Diagram 2A Diagram 4A
Footprint Footprint

 

Order information

Orderinfo

Example for ordering

MRX 05 – 1A71
MRX relay, 5V coil voltage, 1 form A switch 71

Part Inquiry

Your Name (required)

Your Email (required)

Your Address (required)

City (required)

State (required)

Zip (required)

I am interested in

Additional Commments

×