33kV Switchgear

Name: 33kV Switchgear
Brand: Wenzhou Rockwill Electric Co., Ltd.
SKU: 3450
Availability: InStock

17yrs 700++ staff 108000+m² US$150000000+ China

Attributes Description Documentation Resource Library Supplier

Key attributes

Brand	ROCKWILL
Series	RMR,RGIS,REC

Description

33kV Switchgear

ROCKWILL 33kV switchgear — maintenance-free G3 and SF6 gas-insulated ring main units, air-insulated metalclad panels and outdoor RMUs — covering 33kV, 35kV, 36kV and 40.5kV classes for distribution networks.

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33–40.5kV Rated class

630–3150A Current ratings

20–40kA Short-time withstand

G3 / SF6 Sealed insulation

Browse the 33kV switchgear portfolio — gas-insulated RMUs, air-insulated panels and outdoor units for 33kV distribution. Each product links to its dedicated page with full specifications and documentation.

33kV Gas-Insulated RMU

Maintenance-Free G3 Ring Main Unit 33/35/40.5kV

Maintenance-free ring main unit using G3 clean gas instead of SF6, covering 33kV, 35kV and 40.5kV classes.

Series: RMR
Rated voltage: 33 / 35 / 40.5kV
Power-freq withstand: 70 / 80 / 95kV
Lightning impulse: 170 / 185 / 250kV
Frequency: 50 / 60 Hz
Insulation: G3 clean gas, SF6-free, maintenance-free

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SF6 Gas-Insulated RMU 33–40.5kV

IEC-standard SF6 gas-insulated ring main unit for 33kV to 40.5kV distribution networks.

Series: RMR
Rated voltage: 33 / 35 / 40.5kV
Rated current: 630 / 1250A
Power-freq withstand (50Hz): 70 / 80 / 95kV
Short-time withstand: 20kA/4s or 25kA/3s
Insulation: Sealed SF6 gas
Standard: IEC 62271

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Indoor SF6 RMU with Enclosure 36kV

RMR-series indoor SF6 ring main unit with enclosure, rated for 36kV distribution systems.

Series: RMR
Rated voltage: 36kV
Frequency: 50 / 60 Hz
Insulation: Sealed SF6 gas
Type: Indoor, with enclosure

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Outdoor SF6 RMU with Enclosure 7.2–40.5kV

RGIS outdoor SF6 gas-insulated metal-enclosed RMU with welded stainless-steel enclosure and IP65 protection.

Series: RGIS
Rated voltage: 7.2 / 12 / 24 / 33 / 40.5kV
Power-freq withstand (33/40.5): 85 / 95 / 110kV
Lightning impulse (33/40.5): 175 / 185 / 200kV
Busbar current: up to 3150A
Feeder current: 630 / 1250 / 2000A
Short-time current (4s): 20 / 25 / 31.5 / 40kA
Protection: IP65

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35kV Outdoor HV Cable Branch Box RMU

Outdoor high-voltage copper-strip cable branch box switch RMU cabinet for 35kV distribution.

Series: RMR
Rated voltage: 35kV
Rated normal current: 630A
Type: Outdoor cable branch box RMU cabinet

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Maintenance-Free Pure Air/Nitrogen RMU 12–36kV

Maintenance-free RMU insulated by pure air or nitrogen, covering 12kV to 36kV with zero SF6.

Series: REC
Rated voltage: 36kV
Rated normal current: 630A
Frequency: 50 / 60 Hz
Insulation: Pure air / nitrogen, maintenance-free

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33kV Air-Insulated Switchgear & GIS

Withdrawable VCB AIS 30–40.5kV

RAR series withdrawable metal-enclosed air-insulated switchgear with high-performance VCB, to IEC 62271-200:2021.

Series: RAR
Rated voltage: 30 / 36 / 38 / 40.5kV
Power-freq withstand: 70 / 95kV
Lightning impulse: 170 / 185kV
Busbar / CB current: 630–3150A
Short-time withstand: 25 / 31.5kA, 3s
Peak / breaking / making: 63–80kA
Standard: IEC 62271-200:2021

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Metalclad AC Enclosed 40.5kV

KYN series metalclad, AC-enclosed switchgear for robust 40.5kV distribution switching.

Series: KYN
Rated voltage: 40.5kV
Frequency: 50 / 60 Hz
Construction: Metalclad AC enclosed

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Primary Gas Insulated RMU

Compact G3 clean-gas RMU for primary and sub-transmission networks, 12–40.5kV, sealed for life.

Series: RMR, REC
Rated voltage: 12 / 24 / 33 / 40.5kV
Power-freq withstand: 28 / 50 / 70kV (by class)
Lightning impulse: 75 / 125 / 170kV (by class)
Busbar current: 630 / 1250A (up to 2000A)
Short-time withstand: 20 / 25kA for 3s
Insulation: G3 clean gas, SF6-free, near-zero GWP
Standard: IEC 62271-1, -102 / -103

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33kV Switchgear

Documentation Resource Library 33kV Switchgear

Restricted

ESKOM Distribution materials specification for 3.3 to 33kV ring mian units ESKOM Distribution materials specification for 3.3 to 33kV ring mian units

Technical Specifications

English

PDF

Restricted

SEC Specifications for 13.8‑33‑34.5 kV Ring Main Unit‑SRMU SEC Specifications for 13.8‑33‑34.5 kV Ring Main Unit‑SRMU

Technical Specifications

English

PDF

Restricted

RMR-33 SF6 Gas-Insulated Ring Main Unit 33kV, 35kV, 40.5kV RMR-33 SF6 Gas-Insulated Ring Main Unit 33kV, 35kV, 40.5kV

Catalogue

English

PDF

Public

Technical Specification for Outdoor 33kV Switchgear Technical Specification for Outdoor 33kV Switchgear

Technical Specifications

English

PDF

Restricted

RMR-33...35...40.5 G3 Ring Main Unit RMR-33...35...40.5 G3 Ring Main Unit

Catalogue

English

PDF

Certifcations 33kV Switchgear

Frequently asked questions

What is 33kV switchgear?

It is medium voltage switchgear rated for 33kV systems, widely used in distribution networks across Asia, Africa, America,the Middle East and Europe — including ring main units, metalclad panels and outdoor RMUs.

What is the difference between 33kV and 36kV / 40.5kV?

33kV and 35kV are system voltages; 36kV and 40.5kV are the equipment-rated insulation classes commonly specified for them. Our products are offered across all these classes with matching withstand levels.

G3 clean gas or SF6 insulation?

G3 has near-zero global warming potential and avoids F-gas reporting, while SF6 RMUs remain compact and proven. Both use sealed vacuum interrupters and are maintenance-free in service.

What standards does 33kV switchgear comply with?

Ring main units meet IEC 62271-1, -102 / -103; metal-enclosed SF6 units meet IEC 62271-200; air-insulated metalclad panels meet IEC 62271-1 and IEC 62271-200.

Can it be built under our brand?

Yes. We manufacture 33kV switchgear under OEM/ODM with your nameplate, ring layout and IEC 62271 documentation for tenders.

Know your supplier

ROCKWILL

Wenzhou Rockwill Electric Co., Ltd.
17yrs 500-1000 108000+m² US$150000000+ China

Online store

On-time delivery rate

Response time

100.0%

≤4h

Company overview

Workplace: 108000m² Total staff: 700+ Highest Annual Export(usD): 150000000

Services

Business Type: Design/Manufacture/Sales

Main Categories: Medium and High Voltage Switchgear/Power and Distribution Transformers/Instrument Transformers and Sensors/Lightning Protection and Electrical Insulation/Substations and E-Houses/Electrical Panel and Controlgear

Negotiable

Pricing calculator

ESKOM Distribution materials specification for 3.3 to 33kV ring mian units

SEC Specifications for 13.8‑33‑34.5 kV Ring Main Unit‑SRMU

RMR-33 SF6 Gas-Insulated Ring Main Unit 33kV, 35kV, 40.5kV

Technical Specification for Outdoor 33kV Switchgear

RMR-33...35...40.5 G3 Ring Main Unit

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.