The 65F21 is a CIRCUIT BREAKER, MOLDED CASE, F21 SERIES, 63 AMP, 3 POLE, 3 PHASE, 415/690 VAC, 50/60 HZ, 8 KV manufactured by PROTEUS. This circuit breaker is designed to provide reliable and efficient protection against overcurrents. Its compact design and high-quality construction ensure durability and long-lasting performance, making it an essential component for any electrical installation.