View source for Tabulated functional capabilities of LV switchgear

{{Menu_LV_switchgear_functions_and_selection}}__TOC__
After having studied the basic functions of LV switchgear ({{FigureRef|H1}}) and the different components of switchgear, {{FigureRef|H19}} summarizes the capabilities of the various components to perform the basic functions.

{{tb-start|id=Tab1264|num=H19|title=Functions fulfilled by different items of switchgear|cols=5}}
{| class="wikitable"
|-
! rowspan="2" | Switchgear item 
! rowspan="2" | Isolation 
! colspan="4" | Control 
! colspan="3" | Electrical protection
|-
! Functional 
! Emergency switching 
! Emergency stop (mechanical) 
! Switching for mechanical maintenance 
! Overload 
! Short-circuit 
! Electric shock
|-
| Isolator (or disconnector){{tn|D}} 
| {{tb-square}}
| 
| 
| 
| 
| 
| 
| 
|-
| Switch{{tn|E}}
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}}{{tn|A}} 
| {{tb-square}}{{tn|A}}{{tn|B}} 
| {{tb-square}} 
| 
| 
| 
|-
| Residual device (RCCB){{tn|E}} 
| {{tb-square}}
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| {{tb-square}}{{tn|A}}{{tn|B}}
| {{tb-square}} 
| 
| 
| {{tb-square}}
|-
| Switch- disconnector 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| {{tb-square}}{{tn|A}}{{tn|B}} 
| {{tb-square}} 
| 
| 
| 
|-
| Contactor 
| 
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| {{tb-square}}{{tn|A}}{{tn|B}}
| {{tb-square}} 
| {{tb-square}}{{tn|C}}
| 
| 
|-
| Remote control switch 
| 
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| 
| {{tb-square}} 
| 
| 
| 
|-
| Fuse 
| {{tb-square}} 
| 
| 
| 
| 
| {{tb-square}} 
| {{tb-square}} 
| {{tn|F}} 
|-
| Circuit breaker 
| 
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| {{tb-square}}{{tn|A}}{{tn|B}}
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tn|F}} 
|-
| Circuit-breaker disconnector{{tn|E}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}}{{tn|A}}
| {{tb-square}}{{tn|A}}{{tn|B}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tn|F}} 
|-
| Residual and overcurrent circuit-breaker (RCBO){{tn|E}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}}{{tn|A}} 
| {{tb-square}}{{tn|A}}{{tn|B}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}} 
| {{tb-square}}
|-
| Point of installation (general principle) 
| Origin of each circuit 
| All points where,for operational reasons it may be necessary to stop the process 
| In general at the incoming circuit to every distribution board 
| At the supply point to each machine and/or on the machine concerned 
| At the supply point to each machine 
| Origin of each circuit 
| Origin of each circuit 
| Origin of circuits where the earthing system is appropriate TN-S, IT, TT
|}
{{tb-notes
|A= Where cut-off of all active conductors is provided
|B= It may be necessary to maintain supply to a braking system
|C= If it is associated with a thermal relay (the combination is commonly referred to as a “discontactor”)
|D= In certain countries a disconnector with visible contacts is mandatory at the origin of a LV installation supplied directly from a MV/LV transformer
|E= Certain items of switchgear are suitable for isolation duties (e.g. RCCBs according to IEC 61008) without being explicitly marked as such
|F= Circuit breaker and fuse can ensure also protective measure in case of fault by automatic disconnection of the supply}}

[[ru:Сводная таблица функциональных возможностей]]
[[zh:功能一览表H]]