Phoenix Contact develops terminal blocks, power supplies, relays, connectors, signal conditioners, controllers & PLCs, I/O systems, Industrial Ethernet, controller system cabling, PCB terminal blocks & connectors, and surge suppression.
| Nominal input voltage UN | 48 V DC |
| Input voltage range in reference to UN | 0.85 … 1.1 |
| Input voltage range | 40.8 V DC … 52.8 V DC |
| Typical input current at UN | 6.5 mA |
| Typical response time | 5 ms |
| Typical release time | 7 ms |
| Protective circuit | Fuse |
| Freewheeling diode | |
| Reverse polarity protection | |
| Status display/channel | Yellow LED |
| Contact type | 1 N/O contact |
| Type of switch contact | Single contact |
| Contact material | Ag alloy, hard gold-plated |
| Maximum switching voltage | 36 V DC (60 V DC with damaged gold coating) |
| Minimum switching voltage | 100 mV (12 V DC with damaged gold coating) |
| Limiting continuous current | 50 mA (500 mA with damaged gold coating) |
| Min. switching current | 1 mA (10 mA with damaged gold coating) |
| Interrupting rating (ohmic load) max. | 1.2 W (at 24 V DC) |
| Controller level | |
| Connection method | D-SUB pin strip |
| Number of connections | 1 |
| Number of positions | 37 |
| Field level | |
| Connection method | Screw connection with disconnect knife |
| 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 |
| Control side | |
| Connection method | Flat-ribbon cable connector in acc. with IEC 60603-13 |
| Number of connections | 1 |
| Number of positions | 50 |
| Width | 344 mm |
| Height | 126 mm |
| Depth | 66 mm |
| Degree of protection | IP00 |
| Degree of protection (Installation location) | ≥ IP54 (Installation location) |
| Ambient temperature (operation) | -15 °C … 50 °C |
| Ambient temperature (storage/transport) | -15 °C … 50 °C |
| Altitude | ≤ 2000 m |
| Standards/regulations | DIN EN 50178: 1998-04 |
| Mounting type | DIN rail mounting |
| Assembly instructions | in rows with zero spacing |
| Mounting position | any |
| Item number | 2900066 |
| Packing unit | 1 pc |
| Minimum order quantity | 1 pc |
| Note | Made to Order (non-returnable) |
| Sales Key | C421 |
| Product Key | CK21B3 |
| GTIN | 4046356362795 |
| Weight per Piece (including packing) | 1.08 kg |
| Weight per Piece (excluding packing) | 1 kg |
| Customs tariff number | 85364190 |
| Country of origin | DE |
| Weight | 1.000 kg |
|---|---|
| Dimensions | 6.60 × 34.4 × 12.60 cm |
