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Products I Motor / Pump Protection Relays I S2 WTR1



S2 WTR1
Sensing motor winding temperature through PTC Thermistors.
Winding overheating, sensor short, sensor open faults.
Suitable for single, triple or 6/9/12 PTC’s failsafe/Non fail safe
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 Ω to 4K Ω
4.1K Ω 5.5K Ω
5.6K Ω above
0 - 39 Ω

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)
Typical Characteristic of PTC Electrical Connection Diagram

S2 WTR1 S2 WTR1

Relay contact position shown in 'Power off' condition
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
 
 
 
 



MODELS

Motor / Pump Protection Relays

Microprocessor Based Pump Automation System

Winding Over - Temperature Protection Relays