Product Model
PLC-RPT- 72UC/21-21AU/RW

Selling Points
- 1Reliable Railway Solution: Ideal for railway applications with a mechanical service life of approx. 3x 10^7 cycles.
- 2Efficient Operation: Operates efficiently at a nominal input voltage of 72 V DC with a maximum power dissipation of 0.43 W.
- 3Advanced Protection: Equipped with a Bridge rectifier for protection and a yellow LED for operating voltage display.
- 4Durable Contacts: Features 2 changeover contacts made from AgNi, hard gold-plated for long-lasting performance.
- 5Versatile Mounting: Supports DIN rail mounting with push-in connection for easy installation and maintenance.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Parameter | Value | Parameter | Value |
---|---|---|---|
Product type | Relay Module | Product family | PLC-INTERFACE |
Application | Railway applications | Installation location | Attached to the vehicle body |
Operating mode | 100% operating factor | Mechanical service life | approx. 3x 10 |
Date of last data management | 08.07.2024 | Article revision | 07 |
Insulation | Basic insulation | Overvoltage category | III |
Pollution degree | 2 | Maximum power dissipation for nominal condition | 0.43 W |
Test voltage (Winding/contact) | 5 kV | Test voltage (Changeover contact/changeover contact) | 2.5 kV |
Rated insulation voltage | 250 V AC | Rated surge voltage | 6 kV |
Nominal input voltage U | 72 V DC | Input voltage range | 50.4 V DC ... 90 V DC |
Nominal voltage (plugged-in electromechanical relay) | 48 V DC | Drive and function | monostable |
Drive (polarity) | polarized | Typical input current at U | 6 mA |
Typical response time | 5 ms | Typical release time | 11 ms |
Protective circuit | Bridge rectifier
Surge protection; Freewheeling diode
RCZ filter
Wide-range electronics | Operating voltage display | Yellow LED |
Contact switching type | 2 changeover contacts | Type of switch contact | Single contact |
Contact material | AgNi, hard gold-plated | Maximum switching voltage | 30 V AC
36 V DC |
Minimum switching voltage | 100 mV (10 mA) | Limiting continuous current | 50 mA |
Maximum inrush current | 50 mA | Min. switching current | 1 mA (24 V) |
Interrupting rating (ohmic load) max. | 1.2 W (at 24 V DC) | Note | — |
Maximum switching voltage | 250 V AC/DC (Separating plate PLC-ATP must be installed for voltages larger than 250 V (L1, L2, L3) between identical terminal blocks in adjacent modules.) | Minimum switching voltage | 12 V AC/DC |
Limiting continuous current | 6 A | Maximum inrush current | 15 A (300 ms) |
Min. switching current | 10 mA | Interrupting rating (ohmic load) max. | 140 W (at 24 V DC)
100 W (at 48 V DC)
60 W (at 60 V DC)
44 W (at 110 V DC)
60 W (at 220 V DC)
1500 VA (for 250 V AC) |
Switching capacity | 2 A (at 24 V, DC13)
0.2 A (at 110 V, DC13)
0.2 A (at 250 V, DC13)
2 A (at 24 V, AC15)
2 A (at 120 V, AC15)
2 A (at 250 V, AC15) | Connection method | Push-in connection |
Stripping length | 10 mm | Conductor cross section rigid | 0.14 mm² ... 2.5 mm² |
Conductor cross section flexible | 0.14 mm² ... 2.5 mm²
0.2 mm² ... 2.5 mm² (Single ferrule)
2x 0.5 mm² ... 1 mm² (TWIN ferrule) | Conductor cross section AWG | 26 ... 14 |
Width | 14 mm | Height | 80 mm |
Depth | 94 mm | Color | gray (RAL 7042) |
Flammability rating according to UL 94 | V0 (Housing) | Degree of protection (Relay) | RT III (Relay) |
Degree of protection (Relay base) | IP20 (Relay base) | Ambient temperature (operation) | -40 °C ... 70 °C (Temperature class TX) |
Ambient temperature (storage/transport) | -40 °C ... 85 °C | Certificate | CE-compliant |
Certificate | UKCA-compliant | Certificate | TAE0000196 |
Identification | ISA-S71.04. G3 Harsh Group
EN 60068-2-60 | Temperature | D |
Humidity | A | Vibration | B/C |
EMC | B | Enclosure | Required protection according to the Rules shall be provided upon installation on board |
Electromagnetic compatibility | Conformance with EMC directive | Low Voltage Directive | Conformance with Low Voltage Directive |
Standards/regulations | IEC 60947-5-1
EN 50155 (VDE 0115 part 200)
EN 61373
EN 50121 | Mounting type | DIN rail mounting |
Assembly note | in rows with zero spacing | Mounting position | any |
Specifications may be subject to change without notice