BC 17-REL/1/MSTB/R3,3K/R680
   - 
  Relay module
    
      2901881
      
      
    
  
      Relay module, standard interface for fire alarm systems, with miniature relay securely soldered in, 1 N/O contact, input voltage: 24 V AC
Product details
| Utilization restriction | |
| EMC note | EMC: class A product, see manufacturer's declaration in the download area | 
| Product type | Relay Module | 
| Insulation characteristics: Air clearances and creepage distances, input/output | |
| Insulation | Basic insulation | 
| Overvoltage category | III | 
| Pollution degree | 2 | 
| Data management status | |
| Date of last data management | 12.09.2025 | 
| Air clearances and creepage distances, input/output | |
| Rated insulation voltage | 250 V | 
| Rated surge voltage | 4 kV (1.2/50 μs) | 
| Coil side | |
| Nominal input voltage UN | 24 V AC | 
| Input voltage range in reference to UN | 0.8 ... 1.1 | 
| Typical input current at UN | 10 mA | 
| Protective circuit | Bridge rectifier; Bridge rectifier, varistor | 
| Capacitor; Capacitor | |
| Operating voltage display | LED | 
| Switching | |
| Contact switching type | 1 N/O contact | 
| Contact material | AgSnO2, gold-plated | 
| Note | A 660 Ω resistor is connected in series and a 3.3 kΩ resistor is connected in parallel with the output | 
| Maximum switching voltage | 30 V AC | 
| Limiting continuous current | max. 3 A | 
| Input | |
| Connection method | Screw connection | 
| Conductor cross-section rigid | 0.14 mm² ... 2.5 mm² | 
| Conductor cross-section flexible | 0.14 mm² ... 2.5 mm² | 
| Conductor cross-section AWG | 26 ... 14 | 
| Output | |
| Connection method | Screw connection | 
| Conductor cross-section rigid | 0.14 mm² ... 2.5 mm² | 
| Conductor cross-section flexible | 0.14 mm² ... 2.5 mm² | 
| Conductor cross-section AWG | 26 ... 14 | 
| Width | 17.8 mm | 
| Height | 90 mm | 
| Depth | 61 mm | 
| Color | gray (RAL 7042) | 
| Ambient conditions | |
| Degree of protection | IP20 | 
| Degree of protection (Installation location) | ≥ IP54 (Installation location) | 
| Ambient temperature (operation) | -20 °C ... 50 °C | 
| Air clearances and creepage distances, input/output | |
| Standards/regulations | EN 50178 | 
| Mounting type | DIN rail mounting | 
| Assembly note | in rows with zero spacing | 
| Mounting position | any | 
| Item number | 2901881 | 
| Packing unit | 10 pc | 
| Minimum order quantity | 30 pc | 
| Note | Made to order (non-returnable) | 
| Sales key | ***** | 
| Product key | CK617Y | 
| GTIN | 4046356638593 | 
| Weight per piece (including packing) | 200 g | 
| Weight per piece (excluding packing) | 200 g | 
| Customs tariff number | 85364190 | 
| Country of origin | DE | 
| 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.) | No substance above 0.1 wt% | 
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