Blocks contacts series S-K and S-HSB - WESTEC

Blocks Contacts Series S-K and S-HSB - WESTEC

These auxiliary contact blocks are designed for seamless integration with WESTEC S-K and S-HSB series contactors and motor starters. They provide additional signal switching capabilities, typically rated for control circuits up to 690V AC/DC. Available in configurations such as 1NO+1NC, 2NO+2NC, or specialized timing contacts, these blocks offer mechanical and electrical interlocking options. The S-K series features compact, snap-on mounting, while the S-HSB series provides higher switching reliability for demanding applications. Key technical specs include rated operational current up to 10A AC-15, and utilization categories for both AC and DC control circuits.

These auxiliary contacts are essential in industrial control panels, motor control centers (MCCs), and building automation systems. They are commonly used for status feedback, interlocking circuits, and signal duplication in conveyor systems, pump controls, HVAC units, and process automation. Their robust design ensures reliable operation in environments with moderate vibration and dust, making them suitable for factory floors, water treatment plants, and energy distribution systems.

The main subcategories include standard auxiliary contact blocks (e.g., S-K11, S-K22), timing auxiliary blocks (e.g., S-KT), and high-amp versions for the S-HSB series (e.g., S-HSB11, S-HSB22). Article codes typically follow the pattern: S-K[number of contacts][contact configuration], e.g., S-K11 for 1NO+1NC, or S-HSB22 for 2NO+2NC. These blocks are often sold as accessories for specific contactor models, ensuring compatibility and easy installation.

Partnering with Electric Automation Network ensures access to genuine WESTEC blocks at competitive prices with up to 65% discount. Our engineering team provides personalized technical support for selection and integration. We offer express worldwide shipping, real-time pricing, and detailed technical documentation for each article, reducing downtime and procurement complexity.