(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)

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.

 

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
Diagram 2A	Diagram 4A

Order information

Example for ordering

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

 

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