Product type: PTC thermistor (PTC-resistor) relay for temperature protection
Model: MSR220KA / MS220KA
Single PTC circuit: 1 PTC resistor set (3 or 6 PTC sensors in series)
Connectable PTC resistors: 1…6 in series (DIN 44081 / 44082)
Switching threshold: < 4000 Ω
Supply voltage options:
AC 220–240 V ±10 % 50/60 Hz
AC/DC 24 V (AC ±10 %, DC 21–30 V)
AC 110–120 V (some variants)
AC 380–415 V (some variants)
Power consumption: ≤ 2 VA / < 2 W
Output relay:
1 or 2 change-over contacts (CO)
Electronic functions (MSR version):
Electronic reclosing lock (disconnectable)
Integrated RESET button
Link for external reset
Automatic reset at voltage recovery
Indicators:
LED for power ON (green)
LED for alarm (red)
Approvals (typical): ATEX (Directive 2014/34/EU), SIL 1 (IEC 61508), PL c (ISO 13849), UL Recognized Component
Ambient temperature: –20 °C … +55 °C
Housing: K-type, 22.5 mm wide, vertically arranged terminals
Dimensions: approx. 75 × 22.5 × 110 mm (H×W×D)
Mounting: 35 mm DIN rail or with M4 screws
Protection rating: IP30 / IP20
Weight: approx. 150 g
