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Electronic Circuit Breaker

Electronic Circuit Breaker

S8V-CP - Electronic Circuit Breaker

S8V-CP protects DC circuits very precisely. Overload and short circuits are accurately detected and reliably switched off

  • 4- / 8-channel electronic circuit breakers with adjustable tripping currents from 2 to 10 A 
  • Thermomagnetic tripping characteristic 
  • Sequential and load-dependent start-up of the outputs to avoid high inrush currents 
  • Ability to switch-on high capacitive loads reliably 
  • Backlit buttons with multi-color LEDs indicate the output status at a glance 
  • Push-In Plus terminal blocks 
  • Space saving Value Design for Panel 
  • UL Class 2 model reduces the costs of applying a safety standard

Specifications & ordering info

Ordering information

Model Number Structure

Model Number Legend

Not all combinations are possible. Refer to List of Models in Ordering Information, below.

(1) Number of Outputs

Code Number of Outputs
04 4 outputs
08 8 outputs

(2) Rated input voltage

Code Rated input voltage
24 24 VDC

(3) UL Class 2 output

Code UL Class 2 output certified
S Yes
No No

List of Models

Unit

Number of Outputs UL Class 2 output Order code
4 outputs No S8V-CP0424
Yes S8V-CP0424S
8 outputs No S8V-CP0824

Specifications

Item Model Number of Outputs UL Class 2 output S8V-CP0424 S8V-CP0424S S8V-CP0824
4 4 8
No Yes No
I/O characteristics Rated input voltage (Input voltage allowable range) 24 VDC (20 to 30 VDC) 24 VDC (20 to 28.8 VDC) 24 VDC (20 to 30 VDC)
Allowable input current
2
For power input terminals, use 35 A max. per pole.
40 A 15.2 A 70 A
Max. rated output current (per output) 10 A 3.8 A 10 A
Internal voltage drop
2
A voltage drop will occur in the S8V-CP. Consider the voltage drop at the output.
200 mV max. 150 mV max. 200 mV max.
Output leakage current 10 mA max.
Power consumption
2
When selecting the power supply, be sure to include the internal power consumption of the S8V-CP and not just the power consumption of the load.
When all outputs are
connected
10 W max. (at 10 A) 3.1 W max. (at 3.8 A) 20 W max. (at 10 A)
When all output branches
are tripped
0.84 W typ. 0.82 W typ. 1.32 W typ.
Start-up time
2
Outputs start in order from +VO1 to +VO8. +VO1 starts after the initialization time. Start-up delay time of each output is automatically decided depending on the load. If the start-up delay time is over 5 s, the next output is forcibly started.
Initialization time 250 ms typical
Start-up delay time 50 ms to 5 s
Functions
2
Refer to Cat. No. T226-E1 for details.
Current tripping function
2
Refer to Cat. No. T226-E1 for details.
Rated output current 2 A, 3 A, 4 A, 6 A, 8 A, 10 A 3.8 A 2 A, 3 A, 4 A, 6 A, 8 A, 10 A
Cutoff current 2.5 A, 3.5 A, 4.5 A, 6.5 A,
8.5 A, 10.5 A
3.8 A 2.5 A, 3.5 A, 4.5 A, 6.5 A,
8.5 A, 10.5 A
Over voltage tripping function
2
Refer to Cat. No. T226-E1 for details.
No Yes No
Push button (ON/OFF/RESET) with indicator Yes (LED colors: Red/Green/Yellow)
Reset signal input (RST) Yes (High level: 15 to 30 VDC, Low level: 0 to 5 VDC)
Alarm signal output (ALM1/ALM2) Yes (MOS FET relay output 30 VDC max., 50 mA max.)
Insulation Dielectric strength 1.0 kVAC for 1 min (between all terminals and DIN rail mounting parts), current cutoff 20 mA
Insulation resistance 100 MΩ min. (between all terminals and DIN rail mounting parts) at 500 VDC
Environment Ambient operating temperature –25 to 70°C (Derating is required according to the temperature.) (with no condensation or icing)
Storage temperature –40 to 85°C (with no condensation or icing)
Ambient operating humidity 5% to 96% (storage humidity: 5% to 96%)
Vibration resistance 10 to 55 Hz, maximum 5 G, 0.42 mm half amplitude for 2 h each in X, Y, and Z directions
Shock resistance 294 m/s2, 3 times each in ±X, ±Y, ±Z directions
Reliability MTBF
2
MTBF is calculated according to JEITA RCR-9102.
13,5000 hrs typ. 60,000 hrs typ. 13,5000 hrs typ.
Life expectancy
2
Refer to Cat. No. T226-E1 for details.
10 years min.
Construction Weight 160 g max. 170 g max. 420 g max.
Cooling fan No
Degree of protection IP20 by EN/IEC 60529
Standards EMI Conforms to EN 61000-6-3
EMS Conforms to EN 61000-6-2
Safety standards UL 508 (CSA22.2 No.14-10) Listing Pol2
UL 2367 Recognition (Max. 100W per output, per Class 2 limitations) Pol2
2
UL Class 2 output applies for the S8V-CP0424S model only.

CE (EN 61000-6-2, EN 61000-6-3)

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