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.
31DRPTC24 – PTC PROTECT RELAY DRPT 24VDC
Lovato 31DRPTC24 is a 24 V DC PTC thermistor motor protection relay with manual or automatic reset, two changeover auxiliary contacts and 35 mm DIN rail mounting.
£160.99
Why Choose the Lovato 31DRPTC24 PTC Thermistor Protection Relay?
The Lovato 31DRPTC24 is a PTC thermistor motor protection relay designed for thermal protection of motors equipped with PTC temperature sensors. Operating from a 24 V DC supply, it monitors the thermistor circuit and provides a dedicated temperature-based protection solution for industrial motor control systems.
Part of the Lovato DRPT thermistor protection relay range, the 31DRPTC24 supports selectable manual or automatic reset and incorporates a test button for functional checking. It also provides two changeover auxiliary contacts for integration with control, signalling and motor shutdown circuits.
The relay is designed for standard 35 mm DIN rail mounting and provides IP20 frontal protection. With a 250 V rated insulation voltage between supply, inputs and outputs and a 4 kV rated impulse withstand voltage, it is designed for integration into industrial electrical control panels and motor protection systems.
Key Advantages
- Dedicated PTC thermistor motor protection relay.
- 24 V DC rated supply for DC control systems.
- Selectable manual or automatic reset.
- Integrated test button for functional checking.
- Two changeover auxiliary contacts for control and signalling.
- Standard 35 mm DIN rail mounting.
- IP20 frontal protection.
- Suitable for installation in any normal operating position.
Key Features
- Lovato DRPT PTC thermistor protection relay.
- 24 V DC rated operational voltage.
- Manual or automatic reset mode.
- Test button.
- Two changeover auxiliary contacts.
- 250 V rated insulation voltage between supply, inputs and outputs.
- 4 kV rated impulse withstand voltage.
- 250 V auxiliary rated operational voltage.
- Screw terminals.
- Maximum flexible conductor section of 1.5 mm².
- 35 mm DIN rail fixing.
- IP20 frontal protection.
- Conforms to IEC/EN 60255-5.
PTC Thermistor-Based Motor Protection
PTC thermistor protection relays are used with temperature sensors incorporated into motor windings to monitor motor thermal conditions directly. When the thermistor circuit reaches its switching threshold, the protection relay can change the state of its output contacts so the associated control system can stop the motor or provide an alarm.
The Lovato 31DRPTC24 combines PTC thermistor monitoring with manual or automatic resetting, a test function and two changeover auxiliary contacts. Its 24 V DC supply and standard 35 mm DIN rail mounting make it suitable for integration into DC-powered industrial control and motor protection systems.
Typical Applications
- PTC thermistor-based electric motor protection.
- Industrial motor control panels using 24 V DC control supplies.
- Motor starting and protection systems.
- Industrial machinery electrical systems.
- OEM automation and machine-building equipment.
- Control panels requiring DIN rail-mounted temperature protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Terminal Type | Screw | |
|---|---|---|
| Monitoring Function | Temperature / thermistor | |
| Reset Type | Manual or automatic | |
| Mounting Type | DIN rail | |
| Coil / Supply Voltage | 24 V DC | |
| Contacts | 2 C/O | |
| Manufacturer | Lovato Electric | |
| Series | DRPT | |
| Model | 31DRPTC24 | |
| Product type | PTC thermistor protection relay | |
| Rated supply voltage | 24 V DC | |
| Release type | Thermal | |
| Reset mode | Manual or automatic | |
| Test button | Yes | |
| Trip indicator | No | |
| Phase failure detection | No | |
| Auxiliary contacts | 2 changeover contacts | |
| Rated insulation voltage (Ui) | 250 V between supply, inputs and outputs | |
| Rated impulse withstand voltage (Uimp) | 4 kV | |
| Auxiliary rated operational voltage | 250 V | |
| Auxiliary rated impulse withstand voltage | 4 kV | |
| Frontal protection rating | IP20 | |
| Pollution degree | 3 | |
| Terminal type | Screw | |
| Terminal tightening torque | 0.8–1.2 Nm | |
| Maximum flexible conductor section without lug | 1.5 mm² | |
| Maximum flexible conductor section with lug | 1.5 mm² | |
| Storage temperature | -30 to +80 °C | |
| Compensation temperature | -10 to +60 °C | |
| Operating position | Any | |
| Mounting | 35 mm DIN rail | |
| Weight | 196 g | |
| Package dimensions | 84 × 50 × 107 mm | |
| Package volume | 449.4 cm³ | |
| Quantity per package | 1 | |
| EAN13 | 8013975049693 | |
| HS code | 85389091 | |
| Conformity | IEC/EN 60255-5 |
Frequently Asked Questions
What is the Lovato 31DRPTC24 used for?
The Lovato 31DRPTC24 is a PTC thermistor protection relay designed for temperature-based protection of motors equipped with compatible PTC sensors.
What supply voltage does the Lovato 31DRPTC24 require?
The 31DRPTC24 operates from a 24 V DC supply.
Can the Lovato 31DRPTC24 be reset automatically?
Yes. The 31DRPTC24 supports selectable manual or automatic reset.
How many auxiliary contacts does the Lovato 31DRPTC24 have?
The 31DRPTC24 incorporates two changeover auxiliary contacts with a rated operational voltage of 250 V.
How is the Lovato 31DRPTC24 mounted?
The relay is designed for mounting on a standard 35 mm DIN rail and can operate in any normal mounting position.
Reliable Lovato Motor Protection
The Lovato 31DRPTC24 provides PTC thermistor-based motor protection with a 24 V DC supply, manual or automatic resetting, two changeover auxiliary contacts and standard 35 mm DIN rail mounting for industrial control applications.
