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Westmaster Overload Relays

PLEASE NOTE THAT THIS PRODUCT IS NOW OBSOLETE. SMALL QUANTITIES REMAIN AVAILABLE. PLEASE CONTACT THE SALES DEPARTMENT FOR CURRENT PRICE/AVAILABILITY.

Fixed Heater Thermal Overload Relays

Designed to comply with IEC947, BE EN 60947, IEC 292 and BS4941, this unit can be directly connected up to 22kW contactors. As an option, DIN rail mounting with incoming terminals and remote reset are available.

  • 45mm Wide
  • Lockable F.L.C. Dial
  • Trip Indication
  • Single Phase Trip
  • Electrically Separate Contacts
  • IP20 Terminals
  • Remote Reset Available
  • DIN Rail Mounting Option
  • Ambient Temp. Compensation -200C to +700C
  • Hand or Auto Reset
  • Test Position

Rated Insulation Voltage :
Frequency Limits (operating current) :
Ambient Temperature Storage Limits :
Trip Switch—Rated Thermal Current :
Main Terminal Capacity
Auxiliary Terminal Capacity

660V
40-400Hz
-300C to +800C
6A Ith
1 x 10mm2
2 x 1.5mm2

Weight - Overload Relay
Weight - Freestanding Model
Weight - Freestanding with Solenoid Reset

166g
246g
408g

Auxiliary Contact Rating

AC15 to IEC947

Hand

Auto/Alarm

650V 0.5A 650V 0.15A
440V 1.0A 440V 0.25A
250V 2.0A 250V 0.50A
110V 4.0A 110V 1.00A
  48V 6.0A   48V 2.00A
Wiring Diagram Time / Current Curves
 
 
  The time/current curve shown above is a typical Three Phase Tripping Curve
Ordering Information  
Motor Full Load Current
Stop &
Reset Ordering Code
Hand Reset Only Ordering Code
Max Fuse (A) for
Type “C” & Type 2 Co-ordination 50kA Prospective.
Line Connected  
Phase Connected On Star Delta Starters
Motor Circuit
Industrial Type
0.14 - 0.20 A
0.24 - 0.35 A  
 OLWR00A    OLWT00A      2  
0.20 - 0.30 A
0.35 - 0.52 A  
 OLWR00B    OLWT00B      2  
0.30 - 0.45 A
0.52 - 0.78 A  
 OLWR00C    OLWT00C      2  
0.45 - 0.70 A
0.78 - 1.20 A  
 OLWR00D    OLWT00D      4  
0.70 - 1.10 A
1.20 - 1.90 A  
 OLWR00E    OLWT00E      4  
1.10 - 1.80 A
1.90 - 3.10 A  
 OLWR00F    OLWT00F      10  
1.80 - 2.70 A
3.10 - 4.70 A  
 OLWR00G    OLWT00G      10  
2.70 - 4.00 A
4.70 - 6.90 A  
 OLWR00H    OLWT00H      16  
4.00 - 7.00 A
6.90 - 12.10 A  
 OLWR00J    OLWT00J      20  
7.00 - 10.50 A
12.10 - 18.20 A  
 OLWR00K    OLWT00K    20M32    32  
10.50 - 16.00 A
18.20 - 27.70 A  
 OLWR00L    OLWT00L    32M40    40  
16.00 - 22.50 A
27.70 - 39.00 A  
 OLWR00M    OLWT00M    32M50    50  
22.50 - 32.00 A
39.00 - 55.00 A  
 OLWR00N    OLWT00N    63M80    80  
32.00 - 40.00 A
55.00 - 69.00 A  
 OLWR00P    OLWT00P    63M80    80  

 

Solenoid Reset Assembly
 50Hz    60Hz    Ordering Code  
 12-24V      U-4145126
 32-50V      U-4145127
 55-92V    110-120V    U-4145128
 110-127V      U-4145129
 160-346V    200-380V    U-4145130
 380-550V    400-600V    U-4145131
 
Free Standing Kit  U-4125155

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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