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Minilec Temperature Protection Relay WTR D1

Minilec Temperature Protection Relay WTR D1 Specification

Protect Feature
Protection against Over Temperature and Open Sensor

Power Consumption
Approx. 3 VA

Contact Material
Silver Alloy

Dielectiric Strength
2 kV AC, 1 min

Coil Voltage
230 V AC

Ambient Temperature
-10C to +55C

Contact Resistance
< 50 m

Contact Form
1 Change Over (CO)

Working Temperature
-10C to +55C

Mechanical Life
1,000,000 operations min.

Coil Power
3 VA

Product Type
Temperature Protection Relay

Insulation Resistance
>=100 M at 500 V DC

Theory
Solid State Electronic Relay

Usage
Industrial Equipment Protection

Contact Load
5A at 250V AC Resistive

Operate Time
600 ms (typical)

Terminal Type
Screw Type

Rated Voltage
230 V AC, 50 Hz

Supply Terminal
L-N

Size
Compact

Color
Grey

Dimension (L*W*H)
90 x 35 x 64 mm

Weight
Approx. 200 g

Relative Humidity
Up to 95%, Non-condensing

Mounting Type
DIN Rail / Base Mounting

Response Time
< 1 second

Indications
Power ON, Relay ON, Trip

Compliance
CE Certified

Function
Temperature monitoring and relay protection

Trip Temperature Range
-20C to 200C (Settable)

Reset
Manual / Auto selectable

Sensor Input
PT100 (2 or 3 wire)

Storage Temperature
-25C to +70C

Minilec Temperature Protection Relay WTR D1 Trade Information

Minimum Order Quantity
1 Unit

Payment Terms
Telegraphic Transfer (T/T)

Supply Ability
Unit

Delivery Time
As Per Requirement Week

Main Domestic Market
All India

About Minilec Temperature Protection Relay WTR D1

Minilec Temperature Protection Relay

OVERVIEW :-

	Sensing motor winding temperature through PTC Thermistors.
	Winding overheating, sensor short, sensor open faults.
	Suitable for single, triple or 6/9/12 PTCs

TECHNICAL SPECIFICATION:-

Supply Voltage

Auxiliary

110-120/220-240/380-440 V AC/24 V DC 50Hz(60 Hz)10%

Output Contacts

1 CO

Trip Setting

	Thermistor Sensor Healthy
	Thermistor Sensor Trip
	Thermistor Sensor Open
	Thermistor Sensor Short

:
:
:
:

40 ohm - 4 K ohm

4.1 K ohm - 5.5 K ohm

5.6 K ohm and above

39 ohms and below

Trip time delay

Less than 2 secs.

Resetting

Below 1.51 K

Dimensions (mm)

	Overall (L x W x D)
	Mounting (L x W)

:
:

76 x 30.5 x 117.5
68 mm centre to centre / 35 mm Rail Mounting

Weight

300 gms.

Resetting Mode

Auto / Manual (Optional)

Note:

Wherever not specified Contact Rating : 5A @ 230 V AC (resistive)

CONNECTION DIAGRAM:-

Typical Characteristic of PTC	Electrical Connection Diagram

Relay contact position shown in 'Power off' condition

APPLICATION :-

Winding over heating for motors used in:
	Injection Molding M/Cs
	Machine Tools
	Drilling Equipments
	Crane & Hoist Motors
	Compressors & Fan Motors OR
	Transformer Control Panel

Advanced Temperature Protection

The WTR D1 relay is designed for critical temperature control in various industrial environments. Its wide trip temperature set range of -20C to 200C allows precise adjustment to suit specific applications. The PT100 sensor input, supporting both 2-wire and 3-wire configurations, ensures steady and accurate monitoring, reducing the risk of equipment damage due to temperature excursions.

Robust and Reliable Operation

Housed in a compact grey enclosure, this relay is equipped for up to 1,000,000 mechanical operations, offering long service life for continuous protection. It features intuitive indications (Power ON, Relay ON, Trip) for clear status visibility. The relay mounts easily on DIN rails or via base mounting for versatile installation across industrial setups.

Safety and Compliance Assured

The WTR D1 adheres to CE certification, assuring strict safety and quality standards. It provides protection against over-temperature conditions and sensor disconnections, ensuring equipment integrity. With a fast typical operate time of 600 ms, high dielectric strength, and low power consumption, this relay is efficient and robust, even in demanding, high-humidity locations.

FAQs of Minilec Temperature Protection Relay WTR D1:

Q: How does the Minilec WTR D1 relay protect my industrial equipment?

A: The relay continuously monitors connected temperature sensors and instantly trips the relay if set temperature limits are exceeded or if a sensor is disconnected. This prevents overheating and potential equipment damage.

Q: What sensors are compatible with the WTR D1 temperature relay?

A: The WTR D1 is compatible with PT100 temperature sensors, supporting both 2-wire and 3-wire configurations for flexibility in installation and accurate sensing.

Q: When should I use manual versus auto reset mode?

A: Auto reset is ideal for applications where immediate reactivation is safe after a temperature fault is cleared, while manual reset ensures that a technician checks and confirms safety before resuming operation after a trip.

Q: Where can the WTR D1 relay be installed?

A: You can mount this relay on standard DIN rails or use base mounting, making it suitable for most control panels and electrical enclosures in industrial facilities.

Q: What is the setup process for configuring the temperature range?

A: The relay provides user-friendly settings to adjust the trip temperature anywhere between -20C to 200C. Use the provided adjustments to match your specific protection requirements during installation.

Q: What are the main benefits of using this temperature protection relay?

A: Users gain precise temperature control, fast response to over-temperature events, clear indication of operating status, robust protection features, and compliance with international safety standards.