What device is designed to provide limited overcurrent protection for specific equipment?

The device that is designed to provide limited overcurrent protection for specific equipment is the supplementary overcurrent protective device. This type of device is typically used in conjunction with a standard overcurrent protective device such as a circuit breaker or fuse. The supplementary device provides an additional layer of protection specifically tailored to the needs of particular equipment, allowing for more precise control of overcurrent situations.

Supplementary overcurrent protective devices are particularly useful for protecting equipment that may require a higher level of protection compared to standard devices. They are not intended to be the primary means of protection for the circuit, but rather serve to enhance the safety of specific devices that could be damaged by currents exceeding their ratings.

The other options, while related to overcurrent protection, do not provide the same focused function as the supplementary device. A standard circuit breaker offers complete circuit protection and may not provide the specialized settings that equipment may require. An overload relay is primarily used in motor applications to prevent overheating but may not be sufficient for all equipment types. A fuse serves as a basic overcurrent protection device but doesn't provide the tailored response needed for specific equipment scenarios.