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3SK1121-2CB41

The 3SK1121-2CB41 is a 24 V DC on-delay time relay from Siemens' 3SK11 series, offering adjustable timing from 0.1 to 30 seconds via a dial. It features 1 NO and 1 NC delayed contacts, each rated for 5 A/250 V AC or 5 A/30 V DC.

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3SK1121-2CB41 Brief English Parameters
General Information
Product Family: Siemens 3SK11 Series Time Relay
Type: Plug-in timer with adjustable time delay
Order Code: 3SK1121-2CB41
Key Technical Specs
Timing Range:
Adjustable: 0.1–30 seconds (via dial)
Power Supply:
Voltage: 24 V DC
Power consumption: ≤5 W
Contact System:
1 normally open (NO) delayed contact
1 normally closed (NC) delayed contact
Contact rating: 5 A/250 V AC, 5 A/30 V DC
Timing Mode:
On-delay (OD) operation (starts timing when powered)
Mechanical/Lifetime
Mechanical life: ≥1 million operations
Electrical life: ≥100,000 operations (at rated load)
Operating Conditions
Temperature: -25°C to +60°C
Protection class: IP20 (front)
Mounting: DIN rail (35 mm) via plug-in base (requires separate base 3SK1911-0AA)