The ABB part CAL4-11 is an essential accessory for the AF RANGE of ABB contactors. Designed specifically for use with OLS and MMPS models, this reliable and high-performance accessory ensures enhanced functionality and safety in electrical systems. With its superior design and quality construction, the CAL4-11 offers seamless compatibility and easy installation, making it an ideal choice for various applications. Trust ABB for all your contactor accessory needs and experience the unmatched performance and dependability that ABB products are known for.