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 I
N
3
32 mA … 10 A
35 A resp.10 x I
N
5
100 mA … 10 A
1,5 kA
6
32 mA … 10 A
150 A
Table 2:
T4 (130 °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
Catrige fuse-links (5 x 20 mm) **
** only permissible for sandfilled fuse
link
AAP21 4 FS:
Temperature class:
max. ambient temperature (°C)
Compound
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 fuse holder shall be fully closed all times. Do not remove or replace the fuse when energized.
max. ambient temperature (°C)
Separate arrangement:
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 130 °C of the insulating material and 85 °C for the fuse carrier.
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 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:
The informativ temperatures of Table 2 were determined with a nominal current of 100 % according to the
IEC 90647-7-3.
CONDITIONS FOR SAFE USE:
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.
Version: AAP21 4 FS;12072843 ; Index: 00; Date: 10.2017
3