Frequently Asked Questions
Checking on the DC current contact ratings for the CAD50, CAD32, CAD503, CAD323, CAD506, and CAD326 relay.
CAD Industrial Relays
Relays and Timers
125V DC - 0.55 Amps make and break, 2.5 Amps cont.
250V DC - 0.27 Amps make and break, 2.5 amps cont.
600V DC - 0.10 Amps make and break, 2.5 Amps cont.
The replacement part code is CAD50U7
Identifying power terminal lug data for the D2 style contactors
IEC Contactors and Starters
Tesys D line contactors
Power terminal lug data required
For contactors with screw clamp terminals:
stranded cable w/o cable end : One #10-3 AWG or Two #10-4 AWG per terminal.
stranded cable w/cable end: One #10-4 AWG or Two #12-2 AWG per terminal.
solid cable: One #10-3 AWG or Two #10-6 AWG per terminal.
What is the altitude derating for a TeSys D-Line contactor?
Digest 177 Section 18 : Contactors and Starters, IEC
North American Products
The contactors are fully rated up to 3000 meters. Following are derating multipliers for altitudes above 3000 meters for both voltage and current:
3500m x 0.90
4000m x 0.80
4500m x 0.70
5000m x 0.60
3500m x 0.92
4000m x 0.90
4500m x 0.88
5000m x 0.86
For example, an LC1D80 at 5000 meters:
- The maximum rated operational voltage is 1,000V (IEC947-4) and 690V (UL/CSA). At 5000 meters it becomes 1000V x 0.6 = 600V (IEC947-4) and 690V x 0.6 = 414V (UL/CSA).
- The maximum rated operational AC3 current is 80A. At 5000 meters it becomes 80A x 0.86 = 68A.
Identifying maximum voltage of an LC1D contactor
TeSys D Contactors
IEC contactors and starters used in North America
IThe maximum voltage per UL and CSA is 600VAC.