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DO Signal (SIS) Input 24V DC 5A Safety Relay

These safety relay are suitable for the application of E-Stop button, safety gate and DO signal from SIS, with several contacts output. 


The emergency stop safety relay can be operated in single or double channel mode, manual or automatic reset, and with the function of monitoring the short circuit between channels.

  • DO Signal (SIS) Input 24V DC 5A Safety Relay
  • DO Signal (SIS) Input 24V DC 5A Safety Relay

Features & Advantages of DO Signal (SIS) Input 24V DC 5A Safety Relay

  • Several contacts output

  • Low start-up inrush current

Parameter of DO Signal (SIS) Input 24V DC 5A Safety Relay


CZSR8001-3A1BCZSR8001-2A2B
Supply voltage24V DC24V DC
Voltage tolerance0.85~1.10.85~1.1
Current consumption≤90mA (24V DC)≤90mA (24V DC)
Input current≤50mA (24V DC)≤50mA (24V DC)
Cable resistance≤15Ω≤15Ω
Input devicesDO signalsDO signals
Number of contacts3NO+1NC2NO+2NC
Contact materialAgSnO2 + 0.2 µm AuAgSnO2 + 0.2 µm Au
External contact fuse protection10A gL/gG NEOZED (NO);
6A gL/gG NEOZED (NC)
10A gL/gG NEOZED (NO);
6A gL/gG NEOZED (NC)
Utilisation categoryIn accordance with EN60947-5-1:
AC-15, 5A/230V; DC-13, 5A/24V
In accordance with EN60947-5-1:
AC-15, 5A/230V; DC-13, 5A/24V
Switch-on delay≤300ms≤300ms
Delay-on de-energisation≤30ms≤30ms
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
Performance levelPLePLe
CategoryCat.4Cat.4


Block Diagram of DO Signal (SIS) Input 24V DC 5A Safety Relay

DO Signal (SIS) Input 24V DC 5A Safety RelayDO Signal (SIS) Input 24V DC 5A Safety Relay

DO Signal (SIS) Input 24V DC 5A Safety Relay

Typical Applications of DO Signal (SIS) Input 24V DC 5A Safety Relay

DO Signal (SIS) Input 24V DC 5A Safety RelayDO Signal (SIS) Input 24V DC 5A Safety Relay

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