https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Please be informed that the data shown in this PDF Document is generated from our Online Catalog. Please find the complete data in the user's documentation. Our General Terms of Use for Downloads are valid (http://phoenixcontact.com/download) Plug-in industrial relay with power contacts, 4 changeover contacts, test button, status LED, freewheeling diode, mechanical switching position indicator, polarity: A1+, A2-, coil voltage: 48 V DC Key Commercial Data Packing unit 1 pc Minimum order quantity 10 pc GTIN GTIN 4046356758918 Weight per Piece (excluding packing) 34.000 g Custom tariff number 85364190 Country of origin Poland Technical data Dimensions Width 21.2 mm Height 27.5 mm Depth 35.6 mm Ambient conditions Ambient temperature (operation) -40 C ... 70 C Ambient temperature (storage/transport) -40 C ... 85 C Degree of protection RT I Coil side Nominal input voltage UN 48 VDC 03/29/2021Page1/6 https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Technical data Coil side Input voltage range in reference to UN see diagram Typical input current at UN 22 mA Typical response time 13 ms Typical release time 14 ms Protective circuit Damping diode Status display Yellow LED Power dissipation for nominal condition 1.06 W Contact side Contact 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) Min. switching current 5 mA (at 24V) Maximum inrush current 16 A (20 ms, N/O contacts) Limiting continuous current 6A 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 capacity min. 0.12 W Switching capacity 2 A (at 24 V, DC13) 0.22 A (at 120 V, DC13) 0.11 A (at 250 V, DC13) 1.5 A (at 24 V, AC15) 1.5 A (at 120 V, AC15) 1 A (at 240V, AC15) Motor load according to UL 508 1/3HP, 240VAC General Test voltage 2.5 kVrms (50Hz, 1min., winding/contact) 2 kVrms (50Hz, 1min., changeover contact/changeover contact) Operating mode 100% operating factor Mechanical service life approx. 2x 10 cycles Service life, electrical see diagram 7 03/29/2021Page2/6 https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Technical data General Mounting position any Connection data Connection method Plug connection Standards and Regulations Connection in acc. with standard CSA Standards/regulations IEC60664 IEC 61810 Rated insulation voltage 250 VAC Rated surge voltage 2.5 kV Insulation Basic insulation Pollution degree 2 Overvoltage category II Conformance/approvals Designation Corrosive gas test Identification ISA-S71.04. G3 Harsh Group EN60068-2-60 Environmental Product Compliance China RoHS Environmentally Friendly Use Period = 50 years For details about hazardous substances go to tab "Downloads", Category "Manufacturer's declaration" Drawings Diagram Circuit diagram Switching current [A] 20 10 6 4 " 2 ! 1 11 14 12 21 24 22 31 34 32 41 44 42 A1 A2 0,5 0,3 0,2 0,1 10 20 30 50 70 100 200 Switching voltage [V] 300 " AC, ohmic load ! DC, ohmic load Interrupting rating 03/29/2021Page3/6 https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Diagram Diagram 2,4 10 7 2 Cycles Coil voltage U/UN 2,2 1,8 1,6 10 6 1,4 1,2 1 0,8 0,6 10 0 10 20 30 40 50 60 70 Ambient temperature [C] 5 0 80 DC coils AC coils 1 2 Switching capacity [kVA] 3 ! 250 V AC, ohmic load Electrical service life Operating voltage range Diagram 1 Reduction factor 0,9 0,8 0,7 0,6 0,5 0,4 0,3 1 0,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2 COS j Service life reduction factor Classifications eCl@ss eCl@ss 10.0.1 27371601 eCl@ss 11.0 27371601 eCl@ss 4.0 27371100 eCl@ss 4.1 27371100 eCl@ss 5.0 27371600 eCl@ss 5.1 27371600 eCl@ss 6.0 27371600 eCl@ss 7.0 27371601 eCl@ss 9.0 27371601 03/29/2021Page4/6 https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Classifications ETIM ETIM 2.0 EC001437 ETIM 3.0 EC001437 ETIM 4.0 EC001437 ETIM 6.0 EC001437 ETIM 7.0 EC001437 UNSPSC UNSPSC 6.01 30211916 UNSPSC 7.0901 39121515 UNSPSC 11 39121515 UNSPSC 12.01 39121515 UNSPSC 13.2 39122334 UNSPSC 18.0 39122334 UNSPSC 19.0 39122334 UNSPSC 20.0 39122334 UNSPSC 21.0 39122334 Approvals Approvals Approvals CSA / UL Recognized / cUL Recognized / EAC / VDE Zeichengenehmigung / cULus Recognized Ex Approvals Approval details CSA http://www.csagroup.org/services-industries/product-listing/ 2554095 UL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 172140 03/29/2021Page5/6 https://www.phoenixcontact.com/us/products/2903678 Single relay-REL-IR4/LDP- 48DC/4X21-2903678 Approvals cUL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 172140 EAC TR_TS_D_00573_c VDE Zeichengenehmigung http://www2.vde.com/de/Institut/Online-Service/ VDE-gepruefteProdukte/Seiten/Online-Suche.aspx 40040427 cULus Recognized Accessories Accessories Relay socket Relay base-RIF-2-BPT/4X21-2900934 Relay base RIF-2..., for industrial relay with 2 or 4 changeover contacts, Push-in connection, plug-in option for input/ interference suppression modules, for mounting on NS 35/7,5 Phoenix Contact 2021 (c) - all rights reserved http://www.phoenixcontact.com 03/29/2021Page6/6