Siemens Heavy Duty Safety Switches
- rebeccavanessendel
- Sep 16
- 4 min read
Flexible Protection with a Durable Design
Siemens heavy duty safety switches provide superior performance and application flexibility. They feature quick make and quick break operation and visible blade switching construction for a range of amperages with fusible and non-fusible designs. Siemens offers a wide range of accessories and a unique Siemens feature of 200% neutrals and isolated ground kits.
Features & Benefits:
Wide variety of amperages and configurations available to meet any application.
Siemens heavy duty safety switches are available in 30-1200A, 240V and 600V ratings.
Type 1, 3R, 12, and 4X enclosures.
They can be used on circuits that are rated through 200K when protected by or used with Class R or J fuses.
800A/1200A Safety Switches have the viewable window to satisfy local building code requirements. They are available in Fusible and Non-Fusible type 3R, 12, and 4X. More and more requirement for 800/1200A viewable window safety switches come from the local code / utility and applies to facilities with alternate and/ or back up power sources. Examples are Solar, Generator, and Battery.
Type 1 Enclosure
Type 1 enclosures are intended for indoor use primarily to provide protection against contact with the enclosed equipment in locations where unusual service conditions do not exist.
Features
Tangential knockouts in all box surfaces (30-600A HD and 60-600 GD)
Two- and three-point mounting with top keyhole
Door that opens greater than 180°
Formed flange enclosure edges
180° plus side opening door
Drawn cover design for increased durability and resistance to damage (30-600A)
Rugged metal handle with a red insulating grip
Front operable cover interlock release with positive rotating release action (30-1200A heavy duty and 60-600A general duty)
Metal nameplates on all heavy duty switches
Type 3R enclosure
Type 3R enclosures are intended for outdoor use primarily to provide a degree of protection against falling rain and sleet, and must remain undamaged by the formation of ice on the enclosure. They are not intended to provide protection against conditions such as dust, internal condensation or internal icing.
Features
Tangential knockouts in all box surfaces below lowest live parts (30-600A)
Two- and three-point mounting with top keyhole
Formed flange enclosure edges
180° plus side opening door
Double overlap enclosure door top to provide superior protection against entry of rain
Type HA hub provision 30A general duty release action (30-1200A)
Type HS hub provision (30-200A switches)
Galvanized steel construction
Drawn cover design for increased durability and resistance to damage (30-200A)
Rugged metal handle with a red insulating grip
Front operable cover interlock release with positive rotating release action (30-1200A heavy duty and 60-600A general duty)
Metal nameplates on all heavy
Type 3R/12 Enclosure
Type 3R / 3S enclosures are intended to provide a degree of protection against windblown dust, and to allow operation when ice-laden. They are not intended to provide protection against conditions such as condensation or internal icing.
Type 12 enclosures are intended for indoor use primarily to provide a degree of protection against dust, falling dirt and dripping water. They are not intended to provide protection against conditions such as internal Command.
Features
External mounting feet with two, three and four-point mounting
Formed front gasket flange
Unique heavy duty front opening low-profile latches
Galvanized steel enclosure
Formed out enclosure flanges that provide an added degree of protection against entry of dust
Rugged hinge design
180°-plus opening door
3R / 3S / 12 rating as standard allows outdoor use
Rugged metal handle with a red insulating grip
Front operable cover interlock release with positive rotating release action (30-1200A heavy-duty)
Metal nameplates on Type 3S/12 enclosures
Type 4/4X Enclosure
Type 4/4X enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against windblown dust, rain, splashing water and hose-directed water. They are not intended to provide protection against conditions such as internal condensation or internal icing. Also meet 4X definition by providing a high degree of protection against corrosion.
Features (Standard 4X)
Ground lugs installed as standard
External mounting feet with two-, three- and four-point mounting
Formed front gasket flange with continuously welded seams
Heavy duty front opening low-profile stainless steel latches
Stainless steel enclosure
Stainless steel interior parts on 30-200A switches
Formed out enclosure flanges that prevent liquid entry when door is open
Rugged hinge design
180°-plus opening door
Rugged metal handle with a red insulating grip.
Front operable cover interlock release with positive rotating release action (30-1200A heavy duty)
Stainless steel nameplate
Features (Non-Metallic 4X)
External mounting
Ground lug installed as standard
Fiberglass reinforced polyester enclosure
No external metal parts
Removable door for easy wiring
Front operable cover interlock release with positive rotating release action
Power-Flo Technologies is proud to partner with Siemens as their technology empowers customers to transform the industries that form the backbone of economies: industry, transportation, buildings, and grids. With their robust construction, flexible configurations, and wide range of enclosure options, Siemens Heavy Duty Safety Switches deliver reliable performance in even the most demanding environments. From indoor to outdoor applications, and from standard to specialized code-compliant solutions, these switches are engineered to meet diverse needs with superior durability and safety. Backed by innovative features like 200% neutrals, isolated ground kits, and viewable windows for local code compliance, Siemens continues to set the standard for quality and versatility. Protect systems with the reliability and innovation of Siemens safety switches.