KRAUS & NAIMER Switch-Disconnector Catalogue

2 www.krausnaimer.ie Direct Sales Line: 01635 262626 20 Issue 5 A coding system is defined by BS EN 60529 for the classification of degrees of protection provided by enclosures of electrical equipment against solid objects and water. This coding comprises the letters ‘IP’ followed by a two digit code as follows:- IP 6 5 Defines protection against solid objects Defines protection against water. and access to hazardous parts. Degrees of protection indicated by a number up to and including ‘6’ implies compliance with the requirements for all lower numbers. For a code with a second digit of 7 or 8, a second code must be stated to specify protection against water jets or spray. eg IP66/IP67. 1st Protection against solid objects Digit and access to hazardous parts. 0 No protection 1 No ingress by solid objects >=50 mm dia nor access to hazardous parts with the back of the hand 2 No ingress by solid objects >=12.5 mm dia nor access to hazardous parts with a finger. 3 No ingress by solid objects >=2.5 mm dia nor access to hazardous parts with a tool. 4 No ingress by solid objects >=1.0 mm dia nor access to hazardous parts with a wire. 5 Dust protected. Ingress of dust is not completely prevented, but there should be no harmful deposits. No access to hazardous parts with a wire. 6 Dust-tight. No ingress of dust. No access to hazardous parts with a wire. 2nd Protection against water Digit 0 No protection 1 Vertically falling drops of water shall have no harmful effect. 2 Vertically falling drops of water shall have no harmful effect when the enclosure is tilted at any angle up to 15 o from vertical. 3 Water sprayed at up to 60 o from the vertical shall have no harmful effect. 4 Water splashed from any direction shall have no harmful effect. 5 Jets of water projected from any direction shall have no harmful effect. 6 Strong jets of water projected from any direction shall have no harmful effect. 7 Temporary immersion in water shall not result in ingress of harmful quantities of water. 8 Continuous immersion in water shall not result in ingress of harmful quantities of water. • • >=2.5 mm >=12.5 mm • >=1.0 mm 60 o >=50 mm 15 o DEGREES OF PROTECTION IP CODES Reference should be made to BS EN 60529:1992 for full details concerning test and acceptance criteria. DEGRE S OF PROTECTION