Replacement safety device to protect electrical circuits. Length 25.4mm. Diameter 6.3mm. Includes sizes 4 x 3A, 2 x 5A and 4 x 13A. ASTA approved. Complies with BS1362. Replacement safety device to protect electrical circuits. Length 25.4mm. Diameter 6.3mm. Includes sizes 4 x 3A, 2 x 5A and 4 x 13A. ASTA approved. Complies with BS1362.