Shanghai Chenzhu Instrument CO., LTD.
Shanghai Chenzhu Instrument CO., LTD.
  • DO Signal (SIS) 24V DC 2A Safety Relay
  • DO Signal (SIS) 24V DC 2A Safety Relay
  • DO Signal (SIS) 24V DC 2A Safety Relay
  • DO Signal (SIS) 24V DC 2A Safety Relay
  • DO Signal (SIS) 24V DC 2A Safety Relay
  • DO Signal (SIS) 24V DC 2A Safety Relay

DO Signal (SIS) 24V DC 2A Safety Relay

CZSR8401 is suitable for the application of DO signal from SIS. Fail-safe technology and 3 redundancy technology are adopted inside, support separate control loops.

Features & Advantages of DO Signal (SIS) 24V DC 2A Safety Relay

Parameter of DO Signal (SIS) 24V DC 2A Safety Relay


CZSR8401-1ACZSR8401-2A
Supply voltage16V~35V DC16V~35V DC
Current consumption≤60mA (24V DC)≤60mA (24V DC, for each channel)
Number of channels12
Input current≤60mA (24V DC)≤60mA (24V DC)
Cable resistance≤15Ω≤15Ω
Input devicesSafety switches, Contact switchesSafety switches, Contact switches
Number of contacts1NO2NO (1NO for each channel)
Contact materialAgCdO+ 0.3 µm AuAgCdO+ 0.3 µm Au
Contact fuse protection2.5A (Internal)2.5A (Internal)
Utilisation category2A/230V AC; 2A/40V DC2A/230V AC; 2A/40V DC
Switch-on delay≤10ms≤10ms
Delay-on de-energisation≤10ms≤10ms
Recovery time≤100ms≤100ms
Supply short interruption20ms20ms
EMCEN60947, EN61000-6-2, EN61000-6-4EN60947, EN61000-6-2, EN61000-6-4
VibrationVibration frequency: 10Hz~55Hz;
Vibration amplitude: 0.35mm
Vibration frequency: 10Hz~55Hz;
Vibration amplitude: 0.35mm
Ambient temperature-20℃~+60℃-20℃~+60℃
Storage temperature-40℃~+85℃-40℃~+85℃
Relative humidity10%~90%10%~90%
Overvoltage category
Pollution degree22
Rated insulation voltage250V AC250V AC
Rated impulse voltage6000V (1.2/50us)6000V (1.2/50us)
Dielectric strength1500V AC, 1min1500V AC, 1min
Clearance and creepage distanceIn accordance with EN 60947-1In accordance with EN 60947-1
Safety integrity levelSIL3SIL3


Block Diagram of DO Signal (SIS) 24V DC 2A Safety Relay


DO Signal (SIS) 24V DC 2A Safety RelayDO Signal (SIS) 24V DC 2A Safety Relay

DO Signal (SIS) 24V DC 2A Safety Relay


Typical Applications of DO Signal (SIS) 24V DC 2A Safety Relay

DO Signal (SIS) 24V DC 2A Safety RelayDO Signal (SIS) 24V DC 2A Safety Relay

DO Signal (SIS) 24V DC 2A Safety Relay

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