Specifications

29
Mini-Contactors
SK Series
Thermal Overload Relay
3-pole Circuits
Standard Operating limit Overload (hot start) Locked rotor (cold start) Ambient
temperature
Non-tripping Tripping
IEC 60947-4-1 105% le
(for less than 2h)
120% le
(for less than 2h)
Tripping class 10A:
150% le for less than 2min
Tripping class 10A:
720% le for 2 to 10 s max.
20℃
2-pole Circuits
Standard Phase-loss protection Non-tripping Operation (hot start) Ambient temperature
IEC 60947-4-1 Provided. 2-pole: 100% le
1-pole: 90% le
2-pole: 115% le (for less than 2h)
1-pole:0% le
20℃
Ratings for IEC Standard Compliance
Type Conventional free air
thermal current [A]
(Rated continuous current)
Rated operational current [A] Minimum
voltage and current
Rated operational voltage [V] AC-15 (Ind. load) DC-13 (Ind. load)
NC contacts NO contacts NC contacts NO contacts
TK12
5 24 3 (0.5) 3 (0.5) 1.1(0.3) 1.1 (0.3) DC5V, 3mA
100-120 2.5 (0.5) 2.5 (0.5) 0.28 0.28
200-240 2 (0.5) 1.5 (0.5) 0.14 0.14
380-440 1 (0.5) 0.75 (0.5) −
500-600 0.6 (0.5) 0.6 (0.5) −
Numbers in brackets ( ) are for automatic reset.
Ratings for UL and CSA Standard Compliance
Type Rated
continuous
current [A]
Rated operational current [A] Rating code
AC DC
Rated operational voltage [V] Making Breaking Rated operational voltage [V] Making Breaking AC DC
TK12
5 120 30 3 125 0.22 0.22 B600 R300
240 15 1.5
480 7.5 0.75 250 0.11 0.11
600 6 0.6
Auxiliary Circuit Ratings
Operating Characteristics (Specifications)