
BEHAVIOUR WITH CHEMICAL AND ATMOSPHERIC AGENTS
Water
Saline 
solution
Acids Bases Solvents
Mineral 
oil
UV 
rays
Concentrated Diluted Concentrated Diluted Hexane Benzol Acetone Ethyl alcohol
Plates Resistant Resistant
Limited 
resistance
Resistant Resistant Resistant
Limited 
resistance
Not 
resistant
Not 
resistant
Not 
resistant
Limited 
resistance
Resistant
SYSTEM 
devices
Resistant
Limited
resistance
Not 
resistant
Limited 
resistance
Limited 
resistance
Resistant Resistant Resistant Resistant Resistant Resistant Resistant
A modular range of devices for domestic and similar use which can be installed in surface- or flush-mounting boxes and in ordinary and watertight boxes.
The System range for domestic use has a modular structure on flush-mounting frames up to 12 modules. Surface-mounting and free-standing boxes and plates 
are included, along with watertight plates (IP55) and outdoor containers (IP40 and IP55).
The range includes controls, socket-outlets, protections, indicators, connectors and special components with high quality characteristics.
General characteristics
* For rated voltages and currents, see the specifications in the single codes.  ** The value of 2 MΩ refers to a special condition established by the standards given alongside.
* The resistance values given are valid for an ambient temperature no higher than 40°C.
Agent
Component
Miniature lamps
Symbol discs for functional  
signalling
Common construction features
Simplicity of connections: 
double terminals, 
cable clamp with unlosable screws 
and protection collars.
Quick installation:
fixing the devices
on the supports
from both front or rear.
SYMBOL DISCS
TERMINAL TIGHTENING CAPACITY
Stranded wires Solid wires
Minimum 
0.75mm
2
Maximum 
2 x 4mm
2
Minimum 
0.5mm
2
Maximum 
2 x 2.5mm
2
Terminal resistance to cable traction: > 50N
Device hold on support: > 0.6J
TECHNICAL DATA AND REFERENCE STANDARDS
Component Reference standards
Essential electrical data*
Prolonged 
operation 
(no. position 
changes)
Resistance to abnormal heat and fire
Resistance  
at test voltage 
(V)
Insulation 
resistance  
(MΩ)
Breaking capacity or 
category of 
use
Thermo-pressure 
with ball 
(°C)
Glow Wire Test
(°C)
Commands EN 60669-1
2000 
at 50 Hz 
for 1 minute
> 5
1.25 In
(200 position changes)
40,000
at In 250V AC cos φ = 0.6
125 850
Socket-outlets IEC 60884-1
1.25 In
(100 position changes)
10,000
at In 250V AC cos φ = 0.8
Latching relays EN 60669-1 / EN 60669-2-2
50,000
at In 250V AC cos φ = 0.6
Momentary relays EN 60669-1 / EN 60669-2-2
1.25 In
(200 position changes)
Miniature circuit 
breakers
EN 60898-1
2** ÷ 5
3KA 8,000
Residual current 
circuit breakers
EN 61009-1 / EN 61008-1
3KA 4,000
Supports and plates EN 60669-1 - - - - 70 650
1
Technical Information Version 2.2
For technical information contact the Technical Assistance Service or visit gewiss.com
System