Electric Zone 786

TeSys LRD thermal overload relay, 4A/690V, thermal setting range 2.5-4A, tripping class 10A, for protection of 3-phase motors 1.1-1.5kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test selector for simulation of a tripping, reset and stop buttons, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D09-D38. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD7B106 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).

Product Description:

• Available in 3 frame sizes from 0.2 – 570 A
• Ambient temperature compensated up to 55^oC
• Built-in single phasing protection
• Manual and auto reset mode
• Conforms IS/IEC 60947-4-1 & IEC 60947-4-1

Product Description:

BCH Make Overload Relay, All Ranges Available

As per its name, an overload relay device is used to open the circuit in thermal, electrical, or power overload. Also known as relay switches, they are generally close and only used in situations of overload.

Overload relays sense current in the motor and protect it by controlling current, for example, in short circuits, ground faults, short circuits, phase failures, mechanical jamming, etc. Relays cut off the current to the motor when high. These overload relays are used for small heaters, bi-metallic elements, etc.

In BCH electric limited, we offer two types of overload relays, thermal and electronic. Where OLR works on the principle of bimetallic strip deformation on heating, electronic overload relays work on microprocessors.