Single relay - REL-MR-12DC/21HC/EX

Plug-in miniature power relay, RT III sealed with power contacts, 1 changeover contact, input voltage: 12 V DC, in connection with the corresponding PLC base approved in accordance with ATEX/IECEx (zone 2) and Ex zone class I, div. 2.

Product Details

Product type Single relay
Operating mode 100% operating factor
Mechanical service life 3x 107 cycles
Insulation characteristics
Overvoltage category III
Pollution degree 3

Service life electrical see diagram
Maximum power dissipation for nominal condition 0.4 W
Test voltage Winding/contact 5 kV AC (50 Hz, 1 min., winding/contact)

Coil side
Nominal input voltage UN 12 V DC
Input voltage range 7.8 V DC ... 28.8 V DC
Input voltage range in reference to UN see diagram
Typical input current at UN 33 mA
Typical response time 7 ms
Typical release time 3 ms
Coil resistance 360 Ω ±10 % (at 20 °C)

Contact type 1 changeover contact
Type of switch contact Single contact
Drive and function monostable
Contact material AgNi
Maximum switching voltage 250 V AC/DC
Minimum switching voltage 12 V (at 10 mA)
Limiting continuous current 16 A
Maximum inrush current 50 A (20 ms)
Min. switching current 10 mA (at 12 V)
Interrupting rating (ohmic load) max. 384 W (at 24 V DC)
58 W (at 48 V DC)
48 W (at 60 V DC)
50 W (at 110 V DC)
80 W (at 220 V DC)
4000 VA (for 250 V AC)
Switching capacity 2 A (at 24 V, DC13)
0.2 A (at 110 V, DC13)
0.2 A (at 250 V, DC13)
6 A (at 24 V, AC15)
6 A (at 120 V, AC15)
6 A (at 250 V, AC15)

Connection method Solder connection

Dimensional drawing
Width 12.7 mm
Height 29 mm
Depth 15.7 mm

Ambient conditions
Degree of protection RT III
Ambient temperature (operation) -40 °C ... 85 °C
Ambient temperature (storage/transport) -40 °C ... 85 °C

Corrosive gas test
Identification ISA-S71.04. G3 Harsh Group
EN 60068-2-60

Standards/regulations IEC 60664
EN 50178
EN 61810-1

Assembly instructions Can be aligned without spacing (> 70 °C ≥ 2.5 mm)
Mounting position any

Item number 2908821
Packing unit 1 pc
Minimum order quantity 10 pc
Note Made to Order (non-returnable)
Sales Key C05
Product Key CK6195
GTIN 4055626345154
Weight per Piece (including packing) 15.9 g
Weight per Piece (excluding packing) 15.9 g
Customs tariff number 85364190
Country of origin AT


ECLASS-9.0 27371601
ECLASS-10.0.1 27371601
ECLASS-11.0 27371601


ETIM 8.0 EC001437


UNSPSC 21.0 39122300

cUL Recognized

Approval ID: FILE E 228652

UL Recognized

Approval ID: FILE E 228652


Approval ID: RU C-DE.A*30.B.01082

VDE Zeichengenehmigung

Approval ID: 40007758
Approval Specification Data
Nominal Voltage UN Nominal Current IN Cross Section AWG Cross Section mm2
Reports with production monitoring

cULus Recognized

China RoHS Environmentally friendly use period: unlimited = EFUP-e
No hazardous substances above threshold values

Your advantages

Switching current of up to 16 A
RT III-proof (wash-proof)