Technical Specifications / Parameters Parameter Specification Manufacturer Type Code MS116-1.6 Brand / Series ABB MS (Motor Starter) Series - Thermal Overload Relay (TOL) Device Type Thermal Overload Relay (Direct Heating, Bi-metallic) Protection Functions • Sustained Overload Protection (Inverse Time Characteristic) • Single-Phase (Phase Loss) Protection (through inherent design imbalance) • Motor Locked Rotor Protection Rated Operational Current (Ie) The device's operational range. For MS116-1.6, the setting range is 1.0 to 1.6 A. Setting Current (Ir) Adjustable via a dial within the specified range (1.0 - 1.6 A). This should be set to the motor's full-load current (FLC) as stated on its nameplate. Ambient Temperature Compensation Yes (Built-in). The bimetal system compensates for variations in the surrounding air temperature, ensuring accurate protection. Trip Class Typically Class 10 (Standard trip time at 7.2 x Ir is about 10 seconds). This is suitable for standard motor starting. Control Contacts • 1 Normally Closed (NC) Contact (95-96): Used to break the contactor coil circuit upon trip. • 1 Normally Open (NO) Contact (97-98): Can be used for a trip indication/alarm circuit. Contact Ratings Typically: • NC (95-96): 6A / 230V AC (AC-15) • NO (97-98): 6A / 230V AC (AC-15) Mounting Direct Snap-on mounting onto compatible ABB contactors (e.g., A-series) or onto a separate mounting base. Reset Mode Manual reset (push-button) after a trip and cool-down period. Automatic reset versions are available as separate variants. Standards Compliance IEC/EN 60947-4-1, UL 508, CSA C22.2 No. 14. Application Protection of small three-phase motors with full-load currents between 1.0 and 1.6 Amperes.