EMG 17-REL/KSR- 24/21-21-LC
   - 
  Relay module
    
      2940391
      
      
    
  
      Relay module, with soldered-in miniature switching relay, contact (AgNi): medium to large loads, 2 changeover contacts, input voltage 24 V AC/DC
Product details
| Utilization restriction | |
| EMC note | EMC: class A product, see manufacturer's declaration in the download area | 
| Product type | Relay Module | 
| Product family | EMG | 
| Application | Universal | 
| Operating mode | 100% operating factor | 
| Mechanical service life | approx. 5x 107 cycles | 
| Insulation characteristics: Air clearances and creepage distances between the power circuits | |
| Insulation | Basic insulation | 
| Safe isolation, reinforced insulation, and 6 kV between input circuit and output contact current paths | |
| Overvoltage category | II | 
| Pollution degree | 2 | 
| Insulation characteristics: Air clearances and creepage distances between input and contact circuit (or output contact current path) | |
| Insulation | Safe isolation, reinforced insulation | 
| Overvoltage category | III | 
| Pollution degree | 2 | 
| Data management status | |
| Date of last data management | 12.09.2025 | 
| Maximum power dissipation for nominal condition | 0.43 W | 
| Test voltage (Winding/contact) | 4 kV AC (50 Hz, 1 min., winding/contact) | 
| Test voltage (Contact/contact) | 1 kV AC (50 Hz, 1 min., contact/contact) | 
| Air clearances and creepage distances between the power circuits | |
| Rated insulation voltage | 260 V AC | 
| Rated surge voltage | 2.3 kV | 
| Air clearances and creepage distances between input and contact circuit (or output contact current path) | |
| Rated insulation voltage | 260 V AC | 
| Rated surge voltage | 6 kV | 
| Coil side | |
| Nominal input voltage UN | 24 V AC/DC | 
| Input voltage range | 19.2 V AC/DC ... 26.4 V AC/DC (20 °C) | 
| Drive and function | monostable | 
| Drive (polarity) | polarized | 
| Typical input current at UN | 18 mA | 
| Typical response time | 8 ms | 
| Typical release time | 10 ms | 
| Protective circuit | Bridge rectifier; Bridge rectifier | 
| Operating voltage display | Yellow LED | 
| Switching | |
| Contact switching type | 2 changeover contacts | 
| Type of switch contact | Single contact | 
| Contact material | AgNi | 
| Maximum switching voltage | 250 V AC/DC | 
| Limiting continuous current | 5 A | 
| Maximum inrush current | 6 A | 
| Interrupting rating (ohmic load) max. | 120 W (at 24 V DC) | 
| 95 W (at 48 V DC) | |
| 60 W (at 60 V DC) | |
| 40 W (at 110 V DC) | |
| 55 W (at 220 V DC) | |
| 1250 VA (for 250 V AC) | |
| Coil side | |
| Connection method | Screw connection | 
| Stripping length | 8 mm | 
| Screw thread | M3 | 
| Conductor cross-section rigid | 0.2 mm² ... 4 mm² | 
| Conductor cross-section flexible | 0.2 mm² ... 2.5 mm² | 
| Conductor cross-section AWG | 24 ... 12 | 
| Contact side | |
| Connection method | Screw connection | 
| Stripping length | 8 mm | 
| Screw thread | M3 | 
| Conductor cross-section rigid | 0.2 mm² ... 4 mm² | 
| Conductor cross-section flexible | 0.2 mm² ... 2.5 mm² | 
| Conductor cross-section AWG | 24 ... 12 | 
| Width | 17.5 mm | 
| Height | 75 mm | 
| Depth | 62.5 mm | 
| Color | green (RAL 6021) | 
| Ambient conditions | |
| Ambient temperature (operation) | -20 °C ... 40 °C | 
| Ambient temperature (storage/transport) | -20 °C ... 70 °C | 
| Air clearances and creepage distances between the power circuits | |
| Standards/regulations | IEC 60664-1 | 
| Air clearances and creepage distances between input and contact circuit (or output contact current path) | |
| Standards/regulations | IEC 60664-1 | 
| Standards/regulations | |
| Standards/regulations | EN 61810-1 | 
| Mounting type | DIN rail mounting | 
| Assembly note | in rows with zero spacing | 
| Mounting position | any | 
| Item number | 2940391 | 
| Packing unit | 10 pc | 
| Minimum order quantity | 1 pc | 
| Sales key | 02 | 
| Product key | DK61C2 | 
| GTIN | 4017918080068 | 
| Weight per piece (including packing) | 56.58 g | 
| Weight per piece (excluding packing) | 56.58 g | 
| Customs tariff number | 85364199 | 
| Country of origin | DE | 
ECLASS
| ECLASS-13.0 | 27371601 | 
| ECLASS-15.0 | 27371601 | 
ETIM
| ETIM 9.0 | EC001437 | 
UNSPSC
| UNSPSC 21.0 | 39122300 | 
| EU RoHS | |
| Fulfills EU RoHS substance requirements | Yes | 
| Exemption | 6(c), 7(a) | 
| China RoHS | |
| Environment friendly use period (EFUP) | 
              EFUP-50
               An article-related China RoHS declaration table can be found in the download area for the respective article under "Manufacturer declaration". For all articles with EFUP-E, no China RoHS declaration table issued and required. 
             | 
          
| EU REACH SVHC | |
| REACH candidate substance (CAS No.) | Lead (CAS: 7439-92-1) | 
| SCIP | edf2f256-b364-44a6-9350-ca1566a84178 | 
| EF3.0 Climate Change | |
| CO2e kg | 0.707 kg CO2e | 
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