Page 601 - Wago_PCB_TerminalBlocksConnectors_Volume2_2015_US

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599
• Insulation Parameters per IEC/EN 60664-1 (continued)

Based on the application, WAGO terminal blocks and connectors are suitable for pollu-
tion degrees 2 or 3 and for overvoltage categories II or III.
The rated voltages of the WAGO PCB terminal blocks and connectors are based on pol-
lution degree 2 and overvoltage category III in accordance with IEC/EN 60664-1 (insu-
lation parameters).

Example:
WAGO 236 Series PCB Terminal Strips
(5/5.08 mm pin spacing)
320 V/4kV/2

Rated voltage 320 V
Rated surge voltage 4 kV
Pollution degree 2
Overvoltage category III

The specific values for pollution degree 3 and overvoltage category II are also given in
the technical data.

The clearances and creepage distances required for defined voltage values in Table 3
of IEC/EN 60998-1 deviate somewhat from the requirements specified in the insulation
parameters.

Table 3: Clearances and Creepage Distances
(IEC/EN 60998-1)

Rated insulation voltage Creepage distances, clearances
V mm
≤ 130 1.5
> 130 and ≤ 250 3.0
> 250 and ≤ 450 4.0
> 450 and ≤ 750 6.0
> 750 8.0

It must be determined in the end application which creepage and clearance require-
ments are to be observed for approval.

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