Chint NJBK7-50T Motor Protection Relay

The latest Chint NJBK7-50T Motor Protection Relay price in Pakistan is Rs. 11,700/- updated on September 9, 2026.

OVERVIEW:

• NJBK7 series motor protection relay (hereinafter referred to
• as protector) is used to provide overload, locked rotor, phase
• failure, three-phase current unbalance, ground and PTC
• temperature protection for AC motors with a frequency of
• AC 50Hz, a rated insulation voltage of up to 690V and a
• rated operational current of 1A-800A that operate
• continuously or intermittently. The protector uses flexible
• Rogowski coil to acquire current and features wide setting
• current range, high accuracy and convenient installation.
• The protector has Rs. 485 interface and 4mA-20mA analog
• transmission interface, permits network communication and
• can realize remote monitor and control and fault inquiry of
• motors by means of upper computer. The protector is
• genenrally used in combination with AC contactor.
• Standards: IEC 60947-4-1.

Features:

• Structural features
• Split mounting;
• LCD display, key setting;
• Has start delay function;
• Has fault memory function, permits inquiry of fault record;Has Rs. 485 interface, supports MODBUS protocol, permits network communication;Has 4mA-20mA analog output interface;
• Has two groups of output contacts, 1Z protection contact and 1H auxiliary contact, and permits autotransformer reduced voltage
• starting and star-delta starting;
• Power consumption: ≤3VA.

Documents:

Chint NJBK7-50T Motor Protection Relay Data Sheet.pdf