PTC-Thermistor-Relay Type MSR220KA
PTC-Resistor-Relay, single PTC-circuit, ATEX-Approval according directive 2014/34/EU, with Reset
Part number
Approvals
Product description
PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.
Features
- ATEX approval according to directive 2014/34/EU
- SIL 1 according to IEC 61508
- PL c according to ISO 13849
- 1 PTC-resistor (thermistor) set, each 3 or 6 PTC-sensors
- short-circuit monitoring of sensor-circuit
- output-relay with 1 or 2 change-over contacts (co)
- electronic reclosing lock (disconnectable)
- integrated RESET-button
- link for external reset
- automatic reset at voltage recovery
- RESET-Button with integrated LEDs for power-ON (green) and ALARM (red)
- K-housing, vertically arranged terminals housing 22.5 mm wide
- assembly on DIN-rail or with 2 screws M4 (option)
- UL Recognized Component
- Option: other supply voltages
Technical data
Rated supply voltage Us
AC 220 - 240 V ± 10 % 50/60 Hz ≤ 2 VA
AC/DC 24 V, AC ± 10 % DC 21- 30 V < 2 VA,
without potential separation
Connectable PTC resistors
3 or 6 PTC in series according DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Switching point
< 4000 Ω
Output relay
1 or 2 change-over-contact (co)
Type of contact
Type 2 see general technical information
Test conditions
see general technical information
Rated ambient temperature
-20...+55 °C
Dimensions h x w x d
Design K: 75 x 22.5 x 115 [mm]
Attachment
on 35 mm DIN rail according to EN 60 715 or screws M4 (option)
Protection Housing/Terminals
IP30/IP20
Weight
approx. 150 g
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