Section 3: Dimensions And Panel Fixings; Relay Dimensions And Weight - Siemens Argus 7SR21 Technical Manual

7SR21 & 7SR22 - Installation Guide

Section 3: Dimensions and Panel Fixings

3.1

Relay Dimensions and Weight

Relays are supplied in the modular size E6, E8 or E12
The following drawings are available which give panel cut-out and mounting details.
150
PANEL CUT-OUT
130
10
Diameter 3.6 - 4 holes (see note)
155.5
FRONT VIEW
NOTE:
THE 3.6 HOLES ARE FOR M4 THREAD FORMING (TRILOBULAR) SCREWS. THESE ARE SUPPLIED AS STANDARD AND ARE SUITABLE FOR
USE IN FERROUS / ALUMINIUM PANELS 1.6mm THICK AND ABOVE. FOR OTHER PANELS, HOLES TO BE M4 CLEARANCE (TYPICALLY 4.5
DIAMETER) AND RELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT).
2) ACCESS CLEARANCE REQUIRED FOR OPTIONAL ETHERNET COMMS MODULE RETAINING SCREW
Figure 3.1-1 Overall Dimensions (mm) and panel Drilling for Size E6 Epsilon case
Unrestricted Page 8 of 36
11 31
Typical
when
fitted
MINIMUM CLEARANCES:
25mm FOR TERMINAL WIRING
45mm FOR ETHERNET COMMS MODULE
70mm FOR F/O COMMS CABLE
Case Earth connection
FRONT
Case Earth
216.5 connection
SIDE VIEW
TOP VIEW
©2018 Siemens Protection Devices Limited
Optional
ethernet
comms
module
See note 2