• Ckeditor/Images/2026-04-30/CDV6-4D8P.png
  • Ckeditor/Images/2026-04-30/CDV6-4D8P.png
CDV6 Three-phase Voltage Monitoring Relay (2 Sets of Outputs) / Phase Sequence Protector

CDV6-4D8P

Feature
Over voltage,under voltage,phase sequence,power failure protection
Measuring range
176 V-552 V
Number of contacts
2 group switching 2*8 A 250 VAC/24 VDC
  • 3C
  • CE
Features of the CDV6-3D/4D/5D/6D/7D/8D Series

■ Monitor its own operating voltage (true RMS measurement), 45Hz ~65Hz wide frequency measurement 

■ Two sets of output contacts are used for protection and fault alarm 

■ 8 kinds of rated voltages are adjustable, suitable for voltages in various regions of the world 

■ 3-phase 3-wire and 3-phase 4-wire specifications are optional 

■ The voltage measurement accuracy is ≤1% 

■ Anti-harmonic design, optimized for high anti-interference occasions 

■ The working status of the relay is indicated by an LED indicator 

■ Ultra-small size, only 18mm width, 35mm card rail installation 

 

 

Selection Guide——Click to View
Various model combinations available. Click for the selection chart to find your exact specs.

 

General Parameters

Power terminal L1-L2
Measuring frequency range 45 Hz-65 Hz
Voltage threshold range 2%-20% (Rated voltage)
Unbalanced value threshold range 5%-15%
Voltage fixed hysteresis value 2%
Setting method knob
Setting accuracy 10%
Action delay time 0.1 s - 10 s Adjustable
Voltage measurement error ≤1%
Power-on delay time 0.5 s
Temperature fluctuation error 0.05%/℃, at=20 °C
Power indicator Green LED
Output relay indication Red LED
Reset time 1 s
Mechanical durability 1×10⁷
Electrical durability (Resistive load) 1×10⁵
Operating ambient temperature -20 °C ~+55 °C
Storage and transportation ambient temperature -35 °C ~+75 °C
Installation method 35 mm DIN rail mounting
Degree of protection IP20
Dimensions 90 mm×18 mm×65 mm

Specification

CDV6-3D8P
3C CE
Phase sequence protection
L1-L2-L3 (3-phase 3-wire system)
220-230-240-380-400-415-440-460 (P-P)
176 V-552 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-3D8N
3C CE
Phase sequence protection
L1-L2-L3-N (3-phase 4-wire system)
127-132-138-220-230-240-254-265 (P-N)
101 V-318 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-4D8P
3C CE
Over voltage,under voltage,phase sequence,power failure protection
L1-L2-L3 (3-phase 3-wire system)
220-230-240-380-400-415-440-460 (P-P)
176 V-552 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-4D8N
3C CE
Over voltage,under voltage,phase sequence,power failure protection
L1-L2-L3-N (3-phase 4-wire system)
127-132-138-220-230-240-254-265 (P-N)
101 V-318 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-5D8P
3C CE
Overvoltage,undervoltage,voltage imbalance,phase sequence,power failure protection
L1-L2-L3 (3-phase 3-wire system)
220-230-240-380-400-415-440-460 (P-P)
176 V-552 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-5D8N
3C CE
Overvoltage,undervoltage,voltage imbalance,phase sequence,power failure protection
L1-L2-L3-N (3-phase 4-wire system)
127-132-138-220-230-240-254-265 (P-N)
101 V-318 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-6D8P
3C CE
Overvoltage,undervoltage,voltage imbalance,phase sequence,power failure protection
L1-L2-L3 (3-phase 3-wire system)
220-230-240-380-400-415-440-460 (P-P)
176 V-552 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-6D8N
3C CE
Overvoltage,undervoltage,voltage imbalance,phase sequence,power failure protection
L1-L2-L3-N (3-phase 4-wire system)
127-132-138-220-230-240-254-265 (P-N)
101 V-318 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-7D8P
3C CE
Voltage unbalance,phase sequence,power failure protection
L1-L2-L3 (3-phase 3-wire system)
220-230-240-380-400-415-440-460 (P-P)
176 V-552 V
2 group switching 2*8 A 250 VAC/24 VDC
CDV6-7D8N
3C CE
Voltage unbalance,phase sequence,power failure protection
L1-L2-L3-N (3-phase 4-wire system)
127-132-138-220-230-240-254-265 (P-N)
101 V-318 V
2 group switching 2*8 A 250 VAC/24 VDC

This product specification complies with global standards. However, regional specifications may vary slightly.

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