Phoenix REL-MR- 24DC/21HC Single Relay
The Phoenix REL-MR- 24DC/21HC Single Relay (Part No: 2961312 ) offers a 24 V DCnominal input voltage UN, 15.6 V DC ... 57.6 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- 24DC/21HC |
Phoenix REL-MR- 24DC/21HC Single Relay – Technical Specifications
| Specification | Value |
|---|---|
| Product type | Single relay |
| Mechanical service life | 3x 107 cycles |
| Overvoltage category | III |
| Pollution degree | 3 |
| Service life electrical | see diagram |
| Maximum power dissipation for nominal condition | 0.41 W |
| Test voltage (Winding/contact) | 5 kV AC (50 Hz, 1 min., winding/contact) |
| Nominal input voltage UN | 24 V DC |
| Input voltage range | 15.6 V DC ... 57.6 V DC |
| Drive and function | monostable |
| Drive (polarity) | non-polarized |
| Typical input current at UN | 17 mA |
| Typical response time | 7 ms |
| Typical release time | 3 ms |
| Contact switching type | 1 changeover contact |
| Type of switch contact | Single contact |
| Contact material | AgNi |
| Maximum switching voltage | 250 V AC/DC |
| Minimum switching voltage | 12 V (at 10 mA) |
| Limiting continuous current | 16 A |
| Maximum inrush current | 50 A (20 ms) |
| Min. switching current | 10 mA (at 12 V) |
| Interrupting rating (ohmic load) max. | 384 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 II |
| Ambient temperature (operation) | -40 °C ... 85 °C |
| Ambient temperature (storage/transport) | -40 °C ... 85 °C |
| Standards/regulations | IEC 60664 |
| Mounting position | any |
| Coil resistance | 1440 Ω ±10 % (at 20 °C) |
| Switching capacity | 2 A (at 24 V, DC13) |
| Motor load according to UL 508 | 1/2 HP, 120 V AC (N/O contact) |
The Phoenix Contact REL-MR-24DC/21HC operates at a nominal input voltage of 24 V DC and supports a wide voltage range from 15.6 V DC to 57.6 V DC. Built to endure, it provides a mechanical service life of 3 × 10⁷ cycles and handles up to 16 A continuous current. Identified by Part No: 2961312, this 1 Changeover Contacts Single Relay ensures reliable switching for applications requiring fast response, high current handling, and compact form factor. With RT II protection and IEC 60664 compliance, it is trusted by engineers for critical automation tasks.
Maintenance engineers and automation professionals rely on this Phoenix Contact relay for consistent switching even in harsh conditions, with operating temperatures from -40 °C to +85 °C. It’s suitable for new control cabinet designs or replacing older relays without compromising performance.
For more relays from Phoenix Contact, visit our brand page. Full specifications and datasheet for REL-MR-24DC/21HC are available on the Phoenix Relay product page.
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