User Documentation

Weidmüller Interface GmbH Co. KG; Klingenbergstraße 16, 32758 Detmold-Germany
Table 1
EN 60127-2
Spec. Sheet
Rated current Breaking capacity
1
50 mA … 10 A 1,5 kA
2
32 mA … 10 A
35 A resp.10 x IN
3
32 mA … 10 A
35 A resp.10 x IN
5
100 mA … 10 A 1,5 kA
6
32 mA … 10 A 150 A
Table 2:
AFS 4 2C:
T4 (120 °C) T5 (100 °C) T6 (85 °C)
Cartrige fuse-link
4 W/ 6,3A 41 41 36
Cartrige fuse-link
2,5 W/ 6,3A 32 -3 -18
CONDITIONS FOR SAFE USE:
This document should be read carefully before starting installation. Respect the information stated on the
certification label of the terminal, e.g. Type/s of protection, gas group and temperature class. The installation of
these terminals should only be carried out by authorized and qualified personnel whose training has included
instruction on the various types of protection and installation practices, the relevant rules and regulations, and on
the general principles of area classification.
The fuse holder shall be fully closed all times. Do not remove or replace the fuse when energized.
The fuse link shall not be replaced in the presence of a hazardous area and the associated enclosure
shall be marked "Switch off supply and discharge any stored energy safely before removing fuse(s)".
The "stored energy" statement may be replaced by a statement declaring a de-energizing time before opening.
The fuse terminal is safe under the following conditions:
- Use only fuse links according to the Table 1.
- The temperature class must be verified in the final customers specific application.
- T4 based on 120 °C of the insulating material and 85 °C for the fuse carrier.
Mounting instructions:
The fuse terminal blocks are suitable for application in enclosures in atmospheres with flammable gases or
combustible dust. For use in flammable gases these enclosures must satisfy the requirements according to
IEC/EN60079-0 and IEC/EN60079-7. For use in combustible dust these enclosures must satisfy the
requirements according to IEC/EN60079-0 and IEC/EN60079-31.
In combination with other terminal block series and sizes and if other accessories are used, the applicable
creepage and clearance distances shall be met.
Regarding the use of accessories the instructions of the manufacturer must be followed.
The informativ temperatures of Table 2 were determined with a nominal current of 100 % according to the
IEC 90647-7-3.
The fuse terminal blocks maybe used only for short circuit protecting applications based on the operational
self heating at nominal current in combination with the specified fuse links at ambient temperatures according to
the following table:
Catrige fuse-links (5 x 20 mm) **
** only permissible for sandfilled fuse link
Temperature class:
max. ambient temperature (°C)
Separate arrangement:
max. ambient temperature (°C)
Compound arrangement:
Version: AFS 4 2C;11903492 ;Index: 01 ;Date: 04.2018
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