IEC SF6 Mechanical Circuit Breaker HD4

HD4 circuit-breakers are available in fixed or withdrawable versions. The withdrawable version is available for CBF fixed parts and CBE and PowerCube enclosures, UniSafe and UniGear type ZS1 switchgear. HD4 circuit-breakers are used in power distribution to control and protect lines, transformer and distribution substations, motors, transformers, capacitor banks, etc. They are also highly suitable for retrofitting, where the insulating materials of circuits may be sensitive to dielectric stresses.

Ratings
Rated voltage (kV)12 - 40,5
Rated current (A)630 - 3600
Rated breaking current (kA)16 - 50

Documentation and downloads

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Catalogue
HD4 - Gas insulated MV circuit-breakers

English - 5.61 MB - pdf

HD4 according to IEC and GOST standards - Gas insulated MV circuit-breakers

English - 1.86 MB - pdf

Course description
Italy: Training HD4, VD4, V-contact, Unigear ZS1, UniMotor, UniAir, UniMix, REF542plus, PR512/521

English - 1.28 MB - PPT

Data sheet
HD4 12-17,5kV up to 31,5kA and up to 1600A

English - 0.02 MB - pdf

HD4 12-17,5kV up to 50kA and up to 3600A

English - 0.02 MB - pdf

HD4 24kV up to 25kA and up to 1600A

English - 0.02 MB - pdf

HD4 24kV up to 40kA and up to 3600A

English - 0.02 MB - pdf

Leaflet
HD4 - gas insulated MV circuit-breaker for primary distribution

English - 0.11 MB - pdf

HD4 according to IEC and GOST standards - Gas insulated MV circuit-breakers

English - 0.10 MB - pdf

HD4-HXA - Gas insulated medium voltage circuit-breaker for auxiliary circuits of electrical plants with high unidirectional components

English - 0.12 MB - pdf

HD4-LMT Retrofit solution

English - 0.31 MB - pdf

Manual
HD4 - Gas insulated MV circuit-breakers - Supplement on Materials

English - 0.36 MB - pdf

HD4 - Installation and service instructions / Istruzioni per l'installazione e l'esercizio

English - 2.24 MB - pdf

HD4 according to IEC and GOST standards - Gas insulated MV circuit-breakers - Installation and maintenance instructrions

English - 2.64 MB - pdf

HD4-HPA - Istruzioni per l'esercizio e l'installazione / Installation and service instructions

English - 0.85 MB - pdf

HD4-HXA - Instructions pour l’installation et la mise en service - Installation and service instructions

English - 1.95 MB - pdf

HD4-HXA/T - HD4/T - Instructions pour l’installation et l’exploitation - Installation and service instructions

English - 3.99 MB - pdf

HD4-HXA/T - HD4/T -Instructions pour l’installation et l’exploitation - Installation and service instructions

English - 3.99 MB - pdf

HD4-LMT Retrofit solution

English - 0.63 MB - pdf

Poster
HD4 - Poster 70x99 cm.

English - 0.18 MB - pdf

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