ABB PT807 3BSE080228R1 Single mode,BiDi

Mechanical interlock kits

• Used when reversing or multi-speed controllers are customer assembled — usually for panel

mounting

• Mechanically interlocks two contactors or starters so that one does not pick up until the other has

dropped out

Contact kits for simple and fast replacement

• Complete set of kits for contact replacement due to normal wear

• Designed for quick and easy replacement in just minutes, without removing wires or removing the

starter from the enclosure

• Kits include all necessary replacement components

The 300-line three-leg block overload relay includes features that provide positive motor

protection and added operator safety.

Dual bimetallic overload: The dual bimetallic overload relay anticipates motor overload,

responding to rising current and temperature with faster tripping on severe overloads for

better motor protection.

Isolated NO contact: Where it’s essential to monitor performance or diagnose faults, a 300-line starter

may be ordered with an additional isolated,  high fidelity, normally open contact in the overload relay.

This contact may be used for direct input to a programmable controller or interface with a computer.

Manual weld check: The overload relay can be manually tripped as a convenient way to check

against contact welding. Depressing the manual weld check arm trips the relay. A welded contact

can then be detected with a simple continuity check across the relay contact terminals.

Visual trip indicator: Unsafe overriding the reset arm is eliminated because overload reset occurs only

when the reset is released. A bright yellow visual trip indicator tells you at a glance if the relay has

tripped. An optional automatic reset overload relay is available for special applications upon request.

Interchangeable heaters: Overload relay heaters are completely interchangeable with 200-line starter

heaters, eliminating the need to stock an additional line of heaters.