Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
HME21PN48DC IMO Compact power relay 48VDC 2 DPCO
IMO HME21PN48DC compact interface relay with two 8 A changeover contacts, a 48 V DC coil, LED indication and a manual test latch for industrial control and automation applications.
£5.66
Why Choose the IMO HME21PN48DC Compact Interface Relay?
The IMO HME21PN48DC is a compact and reliable 2-pole changeover (2PCO) interface relay designed for switching and control applications in industrial automation, machinery and electrical control panels. As part of the IMO HME compact interface relay series, it combines an 8 A contact rating with a 48 V DC coil, LED indication and a manual test latch in a space-saving plug-in format.
Designed for straightforward installation, commissioning and maintenance, the HME21PN48DC incorporates a mechanical indicator window, LED status indication and a manual test button with latch. Industrial flat-pin connections provide convenient plug-in installation, while the blue latch identifies it as a DC coil version within the HME range.
With two changeover contacts rated at 8 A and a 48 V DC nominal coil voltage, the HME21PN48DC is well suited to PLC interfaces, contactor control, signalling circuits and industrial machinery. Its high-sensitivity 0.53 W DC coil, robust electrical isolation and compact construction make it a versatile relay for modern automation and control systems.
Key Advantages
- Compact 2-pole changeover interface relay for industrial automation and control.
- 8 A contact rating suitable for a wide range of switching duties.
- 48 V DC coil for compatible industrial DC control systems.
- High-sensitivity design with 0.53 W coil power.
- Integrated LED status indicator for rapid visual confirmation of operation.
- Manual test button and latch simplifies commissioning and fault finding.
- Mechanical indicator window provides additional visual relay-status indication.
- Plug-in construction enables straightforward installation, replacement and maintenance.
Key Features
- IMO HME compact interface relay series.
- 2-pole changeover (2PCO / DPCO) contact arrangement.
- 8 A contact rating.
- 48 V DC nominal coil voltage.
- 0.53 W DC coil power.
- 250 V AC / 30 V DC rated contact voltage.
- Maximum switching voltage of 275 V AC / 33 V DC.
- Maximum switching power of 1250 VA / 150 W.
- LED indication, mechanical indicator and manual test latch.
- Blue test latch identifies the DC coil version.
- Industrial flat-pin plug-in connections.
- Silver alloy contact construction.
Reliable Switching for Industrial Control Systems
Interface relays such as the IMO HME21PN48DC provide electrical switching between control equipment and field devices. Applying the 48 V DC control voltage to the relay coil operates two independent changeover contacts, allowing control signals to switch contactors, indicators, alarms, interlocks and other automation equipment while providing electrical separation between the control and switched circuits.
The HME series is designed for convenient use within industrial control panels. Its plug-in construction supports rapid replacement, while the LED and mechanical indicators allow operating status to be checked visually. The manual test latch also enables technicians to operate the relay during commissioning, testing and maintenance without repeatedly energising the control circuit.
Typical Applications
- Industrial electrical control panels.
- PLC and automation interface circuits.
- Contactor and motor-control circuits.
- Machine control and interlocking systems.
- Alarm and signalling circuits.
- Building automation and HVAC control systems.
- Process control equipment.
- OEM machinery and production equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Device Type | Plug-in Relay | |
|---|---|---|
| Terminal Type | PCB / pins | |
| Load Voltage | 275 V AC | |
| Switching Current (A) | 8 A | |
| Coil / Supply Voltage | 48 V DC | |
| Contacts | 2 C/O | |
| Manufacturer | IMO Precision Controls | |
| Series | HME Compact Interface Relays | |
| Model | HME21PN48DC | |
| Product type | Compact interface / power relay | |
| Contact arrangement | 2-pole changeover (2PCO / DPCO) | |
| Contact material | Silver alloy | |
| Contact rating | 8 A | |
| Rated contact voltage | 250 V AC / 30 V DC | |
| Maximum switching voltage | 275 V AC / 33 V DC | |
| Maximum switching power | 1250 VA / 150 W | |
| Coil voltage | 48 V DC | |
| DC coil power | 0.53 W | |
| Coil resistance at 23°C | 4300 Ω ±10% | |
| Insulation resistance | 1000 MΩ at 500 V DC | |
| Operate time | ≤20 ms | |
| Release time | ≤10 ms | |
| Dielectric strength, coil to contacts | 5000 V AC for 1 minute | |
| Dielectric strength, open contacts | 1000 V AC for 1 minute | |
| Dielectric strength, contact sets | 3000 V AC for 1 minute | |
| Mechanical life | ≥107 operations | |
| Electrical life | ≥105 operations | |
| Ambient operating temperature | -40°C to 55°C | |
| Relative humidity | 5% to 85% RH | |
| Atmospheric pressure | 86 to 106 kPa | |
| Vibration resistance | 10 Hz to 55 Hz, 1.0 mm DA | |
| Shock resistance | 1000 m/s² (10 G) | |
| Connection type | Plug-in industrial flat pins | |
| Indication | Mechanical indicator and LED | |
| Manual operation | Test button with latch | |
| Dimensions (L × W × H) | approx. 30.6 × 12.6 × 32.3 mm | |
| Weight | approx. 20 g | |
| HS Code | 8536490099 | |
| Country of Manufacture | China |
Frequently Asked Questions
What is the IMO HME21PN48DC used for?
The IMO HME21PN48DC is a compact interface relay used to switch electrical control circuits in industrial automation, PLC interfaces, machinery, control panels and related applications.
What contact configuration does the HME21PN48DC have?
The relay has a 2-pole changeover (2PCO / DPCO) contact arrangement, providing two independent changeover contacts.
What is the contact rating of the HME21PN48DC?
The HME21PN48DC has an 8 A contact rating, with contacts rated at 250 V AC / 30 V DC.
What coil voltage does the HME21PN48DC require?
The HME21PN48DC operates from a 48 V DC nominal coil supply and has a DC coil power of approximately 0.53 W.
Does the IMO HME21PN48DC have an LED and test button?
Yes. The HME21PN48DC includes an LED indicator, mechanical indicator and manual test latch, making relay status checking, commissioning and maintenance more convenient.
Designed for Professional Industrial Control
IMO HME compact interface relays are designed to provide dependable switching in a space-saving plug-in format, combining industrial flat-pin connections with visual indication and manual testing features for practical use in automation, machinery and electrical control systems.
