Temperature limiter type CR6 / SR6

CR6 and SR6 not automatically resetting, voltage maintained, with connection cables, with Expoxy

SR6 with Mylar®-Nomex® insulating cap

Switching type: Opener CR6 self-holding Opener SR6 self-holding
isolated: no yes
Temperature
Nominal switching temperature (NST), in 5 K steps   [°C] 60 – 180
Tolerance range ≤ 140 °C   Tol [ [K] ± 5
Tolerance range ≥140 °C   Tol [ [K] ± 10
Switch-back temperature (RST below NST) UL [ [K] ≥ 35
(defined RST on customer request) VDE [ °C] ≥ 35
Tension
Operating voltage range up to … 250 V
Rated voltage AC   [VAC] 120/230 (VDE), 250 (UL)
Current/switching cycles
Rated current – cos j = 1.0   [A] / [n] 10,0 / 1‘000
Rated current – cos j = 0.6   [A] / [n] 6,3 / 1‘000
max. Switching current cos j = 1.0   [A] / [n] 25,0 / 1‘000
Other data
High-voltage resistance   [kV] 2
Total bounce time   [ms] < 1
Contact resistance (according to MIL-STD R5757)   [mΩ] £ 50
Vibration resistance 10 … 60 Hz   [m/s2] 100
Pressure resistance of the switch housing   [N] 600
Available licences
please specify IEC, ENEC, VDE, UL, CSA, CQC
Dimensions (standard)
 
Diameter   Ø d [mm] 9,0 9,4
Overall height   h [mm] from 6.3 from 6,7
Length of the insulation cap   l [mm] 17,0
Standard connection   Stranded wire: 0,75 mm2/AWG 18
Functional diagram
The ceramic resistor connected in parallel to the switch heats up after the contact opens, which keeps the contact in the open state.