ABB 1SAM201903R1001 SK1-11 Auxiliary Contact

1. Product Overview

The ABB 1SAM201903R1001 SK1-11 Auxiliary Contact is a modular accessory for electrical control devices, used in conjunction with contactors or relays to provide additional switching signal output. The SK1-11 auxiliary contact provides normally open (NO) and normally closed (NC) contacts, allowing monitoring of the main contact status or expansion of control circuits. Its modular design enables quick installation and maintenance, making it an essential component in industrial automation and motor control systems.

2. Technical Specifications

• Model: 1SAM201903R1001

• Type: Auxiliary Contact

• Poles: 1 NO + 1 NC

• Rated Voltage: AC 400 V / DC 220 V

• Rated Current: 6 A (AC)

• Mechanical Life: ≥ 10,000,000 operations

• Electrical Life: ≥ 1,000,000 operations

• Mounting: Directly mounted on ABB contactors or relays

• Operating Temperature: -25°C to +60°C

• Storage Temperature: -40°C to +70°C

• Protection Rating: IP20

• Dimensions (W×H×D): ~17 × 45 × 55 mm

• Weight: ~0.05 kg

3. Advantages and Features

• Reliable status feedback: Provides output of main contact status for monitoring and control.

• Modular design: Directly mounts on contactors or relays, saving space and simplifying maintenance.

• Multiple contact configuration: Offers NO and NC contacts, flexible for control circuit expansion.

• High durability and long life: Mechanical and electrical life suitable for frequent industrial operations.

• Wide compatibility: Compatible with a variety of ABB contactors and relays.

4. Typical Applications

• Industrial motor control system status feedback

• Auxiliary control circuits for contactors or relays

• Automated production line monitoring

• HVAC systems and fan control

• Factory automation and machinery control

5. Installation & Usage Notes

• Ensure auxiliary contact voltage and current match the main device.

• Securely mount to prevent loosening or poor contact.

• Keep the environment dry and clean, avoiding dust and liquid ingress.

• Regularly check contact status and mechanical operation to ensure reliable signal output.

• Avoid exceeding rated load to prevent contact damage.

The structure and details of the product： ​

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