REL-IR4/24DC/4X21/EX - Single relay

2909738

Pluggable industrial relay, RT III sealed with power contacts, 4x changeover contacts, mechanical switch position indicator, polarity: non-polarized, input voltage: 24 V DC, in connection with RIF-2.../EX bases approved in accordance with ATEX/IECEx (zone 2) and Ex zone class I, div. 2.

This product needs further products for operation. Mandatory accessories

Product type	Single relay
Operating mode	100% operating factor
Mechanical service life	1x 10⁷ cycles, approximately
Insulation characteristics
Insulation	Basic insulation
Overvoltage category	II
Pollution degree	2
Data management status
Date of last data management	05.09.2025

Maximum power dissipation for nominal condition	0.91 W
Test voltage (Winding/contact)	2.5 kV_rms (50 Hz, 1 min., winding/contact)
Test voltage (Changeover contact/changeover contact)	2.5 kV_rms (50 Hz, 1 min., changeover contact/changeover contact)
Rated insulation voltage	250 V AC
Rated surge voltage	2.5 kV

Coil side
Nominal input voltage U_N	24 V DC
Input voltage range	18.7 V DC ... 46.8 V DC
Input voltage range in reference to U_N	see diagram
Drive and function	monostable
Drive (polarity)	non-polarized
Typical input current at U_N	38 mA
Typical response time	13 ms
Typical release time	3 ms

Switching
Contact switching type	4 changeover contacts
Type of switch contact	Single contact
Contact material	AgNi
Maximum switching voltage	250 V AC/DC
Minimum switching voltage	5 V (At 24 mA)
Limiting continuous current	6 A
Maximum inrush current	16 A (20 ms, N/O contacts)
	12 A (4 s, N/O contacts)
Min. switching current	5 mA (at 24 V)
Interrupting rating (ohmic load) max.	144 W (at 24 V DC)
	124 W (at 48 V DC)
	108 W (at 60 V DC)
	52 W (at 110 V DC)
	48 W (at 220 V DC)
	1500 VA (for 250 V AC)
Switching power min.	0.12 W
Switching capacity	2 A (at 24 V, DC13)
	1 A (at 230 V, AC15)
Motor load according to UL 508	1/3 HP, 240 V AC

Connection method	Plug-in connection

Width	21.2 mm
Height	27.5 mm
Depth	35.6 mm

Ambient conditions
Degree of protection	RT III
Ambient temperature (operation)	-40 °C ... 70 °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
	IEC 61810

Mounting position	any

Item number	2909738
Packing unit	10 pc
Minimum order quantity	10 pc
Sales key	C460
Product key	DK694H
GTIN	4055626379685
Weight per piece (including packing)	35.43 g
Weight per piece (excluding packing)	35.43 g
Customs tariff number	85364190
Country of origin	PL

Compatible products

Mandatory accessories

ECLASS-13.0	27371601
ECLASS-15.0	27371601

EU RoHS
Fulfills EU RoHS substance requirements	Yes (No exemptions)
China RoHS
Environment friendly use period (EFUP)	EFUP-E No hazardous substances above the limits
EU REACH SVHC
REACH candidate substance (CAS No.)	No substance above 0.1 wt%

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

REL-IR4/24DC/4X21/EX - Single relay

2909738

Product details

ECLASS

ETIM

UNSPSC

EAC

cULus Recognized

Compatible products

Automate

Connect

Mark, assemble, and install

Supply, charge, and protect

Switch, Measure and Monitor

REL-IR4/24DC/4X21/EX - Single relay 2909738

Product details

ECLASS

ETIM

UNSPSC

Compatible products

RIF-2-BPT/4X21/EX - Relay base 1047028

RIF-2-BSC/4X21/EX - Relay base 1047031

REL-IR4/24DC/4X21/EX - Single relay

2909738