Ziehl MSR220KA Relay

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

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