ABB cal18-11b side mounted instantaneous aux contact block

Why Choose the ABB CAL18-11B Auxiliary Contact Block?

The ABB CAL18-11B (Part Number: 1SFN010720R3311) is a high-performance side-mounted auxiliary contact block designed for ABB block contactors used in industrial motor control and automation systems. Engineered for reliable signalling and control circuit integration, the CAL18-11B provides dependable auxiliary switching functionality for industrial contactor applications.

Designed as a 2-pole auxiliary contact block with 1 normally open (NO) and 1 normally closed (NC) instantaneous contact, the CAL18-11B enables flexible control logic, feedback indication and interlocking functions. Its screw terminal design provides secure electrical connections while supporting long-term reliability in demanding industrial environments.

The ABB CAL18-11B is widely used by panel builders, OEM machine manufacturers and industrial automation engineers requiring dependable auxiliary signalling for ABB AF series block contactors. Its compact side-mounted format ensures straightforward installation while maintaining professional switchgear assembly standards.

Key Advantages

• Provides reliable auxiliary switching and signalling functions.
• Features 1 NO and 1 NC instantaneous contact.
• Compatible with large ABB AF block contactors.
• Compact side-mounted auxiliary contact block design.
• Industrial screw terminal connections for secure wiring.
• Suitable for demanding industrial environments.

Key Features

• ABB CAL18-11B auxiliary contact block.
• Part number: 1SFN010720R3311.
• 1 NO + 1 NC instantaneous auxiliary contacts.
• 2-pole side-mounted auxiliary contact block.
• Industrial screw terminal connection design.
• Suitable for ABB AF400 to AF2850 contactors.
• IP20 protection rating.
• Compact industrial mounting construction.

Technical Specifications

• Manufacturer: ABB
• Series: CAL18 Auxiliary Contact Blocks
• Model: CAL18-11B
• Part number: 1SFN010720R3311
• Product type: Auxiliary contact block
• Contact configuration: 1 NO + 1 NC
• Number of poles: 2-pole
• Mounting type: Side mounted
• Terminal type: Screw terminals
• Rated operational voltage: 24 to 690 V AC
• Protection rating: IP20
• Wire stripping length: 9 mm
• Tightening torque: 1 N·m
• Dimensions (H × W × D): approx. 74 × 64.5 × 17.1 mm
• Weight: approx. 0.04 kg
• EAN: 7320500256312

Reliable Auxiliary Switching for Industrial Automation

Auxiliary contact blocks are essential components used in industrial automation systems to provide signalling, status indication, interlocking and PLC feedback functions. The ABB CAL18-11B enables dependable auxiliary control integration for large motor control and switching applications.

ABB auxiliary contact accessories are engineered for demanding industrial environments where operational reliability, electrical durability and long-term performance are critical. The CAL18-11B supports professional switchgear assembly while maintaining dependable auxiliary circuit operation for industrial motor control systems.

Typical Applications

• Industrial motor starters and switchgear.
• PLC feedback and signalling systems.
• Industrial automation and control panels.
• Electrical interlocking applications.
• OEM machinery and production equipment.
• Power distribution and MCC systems.

Trusted by Industrial Automation Professionals

ABB auxiliary contact accessories such as the CAL18-11B are trusted worldwide for dependable signalling performance, reliable contactor integration and long-term industrial durability.