Degson DSR-K12 Safety Relay | 3NO+1NC | PLe Cat.4 | SIL3

Degson DSR-K12 Safety Relay – 3NO+1NC | PLe Cat.4 | SILCL3

The DSR-K12 is an advanced DIN rail-mounted safety relay featuring 3NO+1NC forced-guided contacts for high-integrity machine safety applications. Certified to PLe/Cat.4 (ISO13849) and SILCL3 (IEC62061), it supports emergency stop buttons, safety gates, and PNP safety light curtain inputs with manual or automatic reset modes.

Compared to the DSR-K11 (1NO+1NC), the DSR-K12 provides three normally-open safety contacts, making it ideal for applications requiring control of multiple actuators from a single safety loop.

Input

• Current consumption: ≤ 50mA / 24V DC
• Cable resistance: ≤ 1Ω
• Input devices: E-STOP button, Safety gate, PNP safety light curtain

Output

• Signal type: 3NO + 1NC
• Contact type: Forced guided
• Contact material: AgSnO2+0.2μmAu
• Contact loading: AC-15: 5A/230V DC, DC-13: 5A/24V
• Contact fuse protection: 10A gL/gG (NO); 6A gL/gG (NC)

Times

• Switch-on: Auto: ≤ 300ms, Manual: ≤ 150ms
• Release: E-stop: ≤ 30ms, Power failure: ≤ 100ms
• Recovery time: E-stop: ≤ 30ms+T, Power failure: ≤ 100ms
• Supply short interruption: 20ms

Environmental

• EMC: IEC/EN60947, IEC61326-3-1, IEC/EN61000-6-2, IEC/EN61000-6-4
• Rated insulation voltage: 250V AC
• Rated impulse voltage: 6000V (1.2/50μs)
• Dielectric strength: 1500V AC, 1min
• Clearance and creepage: IEC60947-1
• Vibration: 10Hz – 55Hz, 0.35mm
• Overvoltage category: III
• Pollution degree: 2
• Protection type: IP20
• Ambient temperature: -20°C ~ +60°C
• Storage temperature: -40°C ~ +80°C
• Relative humidity: 10%RH ~ 90%RH (40°C)
• Atmosphere pressure: 80kPa – 106kPa
• Operating altitude: ≤ 2000m

Mechanical

• Mechanical life: 10,000,000 cycles
• Connect type: Screw terminal
• Weight: 180g

Safety Values (ISO 13849)

• Performance level: PLe
• Category: Cat.4
• OTI: ISO13849
• PTI: 20 Years
• DC: 99%
• MTTF: 164 Years
• CCF: 68
• SIL: SIL3 / IEC61508

Safety Standards (IEC 62061)

• SIL CL: SILCL3
• HFT: 1
• SFF: ≥99%
• DC (AVG/PTI ≥ 20 years): IEC62061
• PFH: IEC62061
• Stop Category: 0 / IEC60204

Power Supply

• Voltage range: 24V AC/DC
• Voltage tolerance: 0.85 – 1.1
• AC frequency: 50Hz – 60Hz
• Power dissipation: ≤ 2.2W/24V DC, ≤ 5.4VA/24V AC