Phoenix REL-MR-110DC/21-21 Single Relay
The Phoenix REL-MR-110DC/21-21 Single Relay (Part No: 2961202 ) offers a 110 V DCnominal input voltage UN, 71.5 V DC ... 272.8 V DC input voltage range, 250 V AC/DC switching voltage, Plug / solder connection method. Manufactured by Phoenix under the Phoenix Single Relay category, this model belongs to the Phoenix REL Series.
| Brand | Phoenix Contact |
| Product Type | Single Relay |
| Model Number | REL-MR-110DC/21-21 |
Phoenix REL-MR-110DC/21-21 Single Relay – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Single relay |
| Mechanical service life | 3x 107 cycles |
| Insulation | Basic insulation |
| Overvoltage category | III |
| Pollution degree | 3 |
| Service life electrical | see diagram |
| Maximum power dissipation for nominal condition | 0.45 W |
| Test voltage (Winding/contact) | 5 kV AC (50 Hz, 1 min., winding/contact) |
| Nominal input voltage UN | 110 V DC |
| Input voltage range | 71.5 V DC ... 272.8 V DC |
| Drive and function | monostable |
| Drive (polarity) | non-polarized |
| Typical input current at UN | 4.1 mA |
| Typical response time | 7 ms |
| Typical release time | 3 ms |
| Contact switching type | 2 changeover contacts |
| Type of switch contact | Single contact |
| Contact material | AgNi |
| Maximum switching voltage | 250 V AC/DC |
| Minimum switching voltage | 5 V (at 10 mA) |
| Limiting continuous current | 8 A |
| Maximum inrush current | 25 A (20 ms) |
| Min. switching current | 10 mA (At 5 V) |
| Interrupting rating (ohmic load) max. | 190 W (at 24 V DC) |
| Connection method | Plug / solder connection |
| Width | 12.7 mm |
| Height | 29 mm |
| Depth | 15.7 mm |
| Degree of protection | RT III |
| Ambient temperature (operation) | -40 °C ... 85 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Standards/regulations | IEC 60664 |
| Mounting position | any |
| Coil resistance | 26600 Ω ±15 % (at 20 °C) |
| Switching capacity | 2 A (at 24 V, DC13) |
| Motor load according to UL 508 | 1/4 HP, 120 V AC |
The Phoenix Contact REL-MR-110DC/21-21 (Part No: 2961202) is a durable 110 V DC Voltage Single Relay designed for precision control in automation and process systems. It operates with a nominal input voltage of 110 V DC and supports a wide operating range from 71.5 V to 272.8 V DC, ensuring stable performance under varying load conditions. With a fast 3 ms response time and an 8 A continuous current limit, this Single Relay provides reliable switching for both resistive and inductive loads in critical control applications.
Built with long mechanical life of 30 million cycles and tested as per IEC 60664 standards, the Phoenix Contact REL-MR-110DC/21-21 ensures exceptional reliability for industrial users. The relay’s low power dissipation of 0.45 W minimizes heat buildup, improving overall panel efficiency. Its plug or solder connection design simplifies installation for maintenance teams and panel builders. Compact dimensions of 12.7 mm width and 15.7 mm depth make it suitable for dense automation setups. The Phoenix Contact 110 V DC Voltage Single Relay maintains safe and consistent operation between -40°C and +85°C, making it ideal for robust and energy-efficient industrial control environments.
The Phoenix Contact 110 V DC Voltage Single Relay is designed for use in automation control panels, PLC output interfaces, and machine safety circuits. It provides dependable switching for energy systems, control cabinets, and signaling applications in manufacturing, utilities, and infrastructure. Engineers prefer this relay for its wide voltage tolerance, quick actuation, and long operational life. Its RT III protection ensures reliable function in environments with dust and humidity, making it suitable for continuous operation in harsh industrial setups. Whether used in new installations or retrofit projects, this Single Relay supports consistent performance and long-term reliability.
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