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Minilec Temperature Protection Relay S2 WTR1

Minilec Temperature Protection Relay S2 WTR1 Specification

Dielectiric Strength
2.0kV AC, 1 min

Coil Power
<2VA

Mechanical Life
More than 10^6 operations

Contact Material
Silver Alloy

Protect Feature
Over Temperature Protection

Contact Resistance
<50 m

Working Temperature
-10C to +55C

Coil Voltage
Internal Supply 110-240V AC/DC

Power Consumption
<2VA

Contact Form
1 C/O (SPDT)

Ambient Temperature
-10C to +55C

Product Type
Temperature Protection Relay

Insulation Resistance
>100 M at 500 VDC

Theory
Electromagnetic Relay

Usage
Temperature monitoring and protection for electrical equipment

Contact Load
5A at 250V AC

Operate Time
< 200 ms

Terminal Type
Screw terminals

Rated Voltage
110-240V AC/DC

Supply Terminal
Front side terminals

Size
35 mm module

Color
Grey

Dimension (L*W*H)
90 mm x 36 mm x 58 mm

Weight
130 g

Refresh Rate
60 Hz

Remote Battery Type
AAA

Operating System
Android

Sleep Timer
Yes

USB Ports
2

Smart TV Features
Built-in WiFi, Screen Mirroring

Viewing Angle
178

Minilec Temperature Protection Relay S2 WTR1 Trade Information

Minimum Order Quantity
1 Unit

Payment Terms
Telegraphic Transfer (T/T)

Supply Ability
Unit

Delivery Time
As Per Requirement Months

Main Domestic Market
All India

About Minilec Temperature Protection Relay S2 WTR1

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 failsafe/Non fail safe

TECHNICAL SPECIFICATION:-

Supply Voltage

Auxiliary

12/24V DC/100-120/220-240V AC, 50Hz(60 Hz)10%

Output Contacts

2 CO

Trip Setting

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

:
:
:
:

40 to 4K

4.1K 5.5K

5.6K above

0 - 39

Trip time delay

Less than 1 Sec (Fixed)

Resetting

Below 1.51 K

Dimensions (mm)

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

:
:

90 x 35 x 60
35 mm Rail Mounting

Weight

250 gms.

Resetting Mode

Auto / Manual

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

Versatile Mounting and Reliable Performance

The S2 WTR1 relay is constructed for easy installation via DIN rail mounting and features robust flame-retardant plastic housing. Designed to operate efficiently between -10C to +55C, it withstands high relative humidity (up to 95% RH, non-condensing), making it perfect for diverse electrical setups.

Accurate Sensing and Responsive Operation

Equipped with a high-quality PT100 sensor (2 or 3 wire) and advanced electronic circuitry, the relay provides precise temperature monitoring with 1C accuracy. It reacts within 200 ms and can detect temperature from distances up to 100 meters, ensuring timely and effective protection for your equipment.

User-Friendly Interface and Indicators

Clear LED indications display power status, trip events, and relay output for quick diagnostics. The unit includes easy-to-wire screw terminals accessible from the front, supporting streamlined installation and maintenance in industrial control panels.

FAQs of Minilec Temperature Protection Relay S2 WTR1:

Q: How does the Minilec S2 WTR1 relay provide temperature protection for electrical equipment?

A: The relay monitors temperature using a PT100 sensor, activating its electromagnetic relay when preset thresholds are exceeded to prevent equipment from overheating, thus providing prompt over temperature protection.

Q: What is the maximum sensor cable length supported by the S2 WTR1 device?

A: The S2 WTR1 relay supports sensor cables with a maximum length of up to 100 meters, ensuring accurate temperature readings even when sensors are installed far from the relay unit.

Q: When should the manual or automatic reset feature be used on this relay?

A: Manual reset should be used after inspecting and resolving high temperature events, ensuring safety before restarting. Automatic reset is suited to applications where equipment can safely resume operation once temperatures drop below set limits.

Q: Where is the ideal installation location for the S2 WTR1 relay?

A: The relay is best installed inside an electrical panel or control cabinet using DIN rail mounting, in environments within -10C to +55C ambient temperature range and relative humidity up to 95% RH non-condensing.

Q: What LED indications are provided on the S2 WTR1 relay?

A: The relay features distinct LED indications for Power ON, Trip condition, and Relay Output, aiding quick identification of operational status and fault conditions.

Q: How does the S2 WTR1 ensure user safety and durability?

A: With a flame-retardant plastic body, high insulation resistance (>100 M at 500 VDC), dielectric strength of 2.0kV AC for 1 minute, and mechanical life exceeding one million operations, the relay is built for long-lasting, safe use in industrial environments.

Q: What are the benefits of using the Minilec S2 WTR1 relay in industrial applications?

A: Benefits include precise temperature control, versatile mounting, fast response, protective features for equipment longevity, compatibility with wide supply voltages, and sturdy construction suitable for harsh conditions.