Medium-voltage outdoor distribution products

Learn about Siemens new CMR compact modular recloser

Medium-voltage overhead distribution lines and substations up to 38 kV

Outdoor products are essential components of medium-voltage distribution grids. Siemens' comprehensive outdoor portfolio of switching devices, vacuum circuit breakers, surge arresters, and voltage regulators is designed for a wide variety of applications and climatic conditions. Type-tested reliability as well as long electrical life and mechanical robustness help to minimize operation costs while increasing resiliency of medium-voltage smart grids. Solutions for wildfire mitigation and arc-resistance to improve operator safety available on select products. 

Distribution switching

Disconnects 15 kV-38 kV, types SE and SEL

SE and SEL medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV, or 38 kV
  • Rated continuous current: 600 A, 900 A, or 1,200 A
  • Lightning-impulse (BIL): 150 kV or 200 kV
  • Ruggedly built, the types SE and SEL in-line disconnects splice into the line. By securely supporting the conductor while providing the required insulation gap, line maintenance can be performed rapidly and safely.
  • In-line disconnection under tension for rapid and safer line maintenance.

Learn more about types SE and SEL medium-voltage disconnects.

Disconnects 15 kV-38 kV, type SER

SER medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV, or 38 kV
  • Rated continuous current: 600 A or 900 A
  • Lightning-impulse (BIL): 110 kV, 150 kV or 200 kV
  • A single-insulator disconnect, the type SER is rugged and reliable where dependable operation in a lightweight package is required. Featuring a sturdy and well-ventilated square-tubular copper blade and high-pressure silver contacts, these switches have superior current-carrying characteristics.
  • Cut-out, mounted disconnection.

Learn more about type SER medium-voltage disconnects.

Disconnects 15 kV-38 kV, type LER

LER medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV, or 38 kV
  • Rated continuous current: 600 A or 900 A
  • Lightning-impulse (BIL): 110 kV or 150 kV
  • Featuring a sturdy and well-ventilated square-tubular copper blade and high-pressure silver contacts, the type LER line-tap disconnect provides superior current-carrying characteristics. Meets the requirements of a wide array of cable-riser and cross-over applications.
  • Line-tap or cross-over disconnection.

Learn more about type LER medium-voltage disconnects.

Disconnects 15 kV-25 kV, type E

E medium-voltage disconnects

  • Maximum design voltage: 15 kV or 25 kV
  • Rated continuous current: 600 A or 900 A
  • Lightning-impulse (BIL): 110 kV or 150 kV
  • A distribution class switch that meets power class standards up to 600 A. Applicable for use on all circuits up to 600 A. When fitted with the Saf-T-Gap interrupter, the type E can be used for transformer magnetizing, line charging, and loop-switching currents as well as emergency load dropping.
  • Power class distribution interrupting where clamp mounting is possible.

Learn more about type E medium-voltage disconnects.

Disconnects 15 kV-38 kV, type EF

EF medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV, or 38 kV
  • Rated continuous current: 600 A or 900 A
  • Lightning-impulse (BIL): 110 kV or 150 kV
  • Crossarm mounted with either through bolts or optional clamping arrangement, the type EF disconnect is a robust, securely mounted switch for disconnection at a crossarm or frame assembly where a clamp-mounting assembly is suitable.

Learn more about type EF medium-voltage disconnects.

Bypass disconnect switches 15 kV-38 kV, type B-1 regulator

B-1 regulator bypass medium-voltage disconnect switches

  • Maximum design voltage: 15 kV, 27 kV, or 38 kV
  • Rated continuous current: 600 A, 900 A, or 1,200 A
  • Lightning-impulse (BIL): 110 kV, 150 kV, or 200 kV
  • A simple and rugged, three-blade, disconnect switch, the type B-1 encompasses a major safety feature in that the bypass blade can be visually checked to verify that it is open.
  • Regulator bypassing to reduce the impact of equipment maintenance on network reliability.

Learn more about type B-1 regulator bypass medium-voltage disconnect switches.

Bypass disconnect switches and assemblies 15 kV-38 kV, type B-2 regulator

B-2 regulator bypass medium-voltage disconnect switches and assemblies

  • Maximum design voltage: 15 kV, 27 kV, or 38 kV
  • Rated continuous current: 600 A or 900 A
  • Lightning-impulse (BIL): 110 kV, 150 kV, or 200 kV
  • A versatile bypass solution, the type B-2 bypass switch is purposely designed as a recloser bypass and can also be used as a regulator bypass. Underhung and angled pole-mounting brackets contribute to ease of installation.
  • Recloser or regulator bypassing to reduce the impact of equipment maintenance on network reliability.

Learn more about type B-2 regulator bypass medium-voltage disconnect switches.

Group-operated 25 kV-38 kV switches, type Vector series

Vector® series group-operated medium-voltage switches

  • Maximum design voltage: 25 kV or 38 kV
  • Rated continuous current: 900 A or 1,200 A
  • Lightning-impulse (BIL): 150 kV or 200 kV
  • Designed for superior performance in three-phase loadbreak switching, the Vector is manufactured as a true unitized switch. High-pressure, self-cleaning contacts improve reliability. Factory adjusted and fitted with a single-point lift, the Vector can be manually operated or motorized.
  • Three-phase off-load and loadbreak switching.

Learn more about Vector series group-operated medium-voltage switches.

Group-operated 15 kV-38 kV switches, type Topper series

Topper® series group-operated medium-voltage switches

  • Maximum design voltage: 15 kV, 25 kV, or 38 kV
  • Rated continuous current: 600 A, 900 A, or 1,200 A
  • Lightning-impulse (BIL): 110 kV, 150 kV, or 200 kV
  • A compact style switch for use where mounting clearances are constrained. Tailored to substation duties, the Topper comes fully assembled and factory adjusted on either a steel or aluminum base with a range of mounting styles to provide the best fit to the application.
  • Three-phase off-load and loadbreak switching.

Learn more about Topper series group-operated medium-voltage switches.

Distribution protection

Overhead circuit breakers 12 kV-27 kV, type Fusesaver

Fusesaver™ outdoor overhead medium-voltage circuit breakers

  • Maximum design voltage: 15 or 27 kV
  • Rated short-time withstand current: 4 kA or 6.3 kA
  • Rated continuous current: 100 A or 200 A
  • Lightning-impulse (BIL): 110 kV or 125 kV
  • As the world's fastest medium-voltage outdoor vacuum circuit breaker, Fusesaver™ circuit breaker reduces the impact of temporary faults on lateral lines. Its sub-cycle operating time and wireless communications help utilities increase network reliability while minimizing operating costs of overhead medium-voltage networks.
  • Saves fuses from blowing due to transient faults or completely replaces fuses. Cal Fire exempt for use in wildfire-prone regions.

Learn more about type Fusesaver medium-voltage outdoor overhead circuit breakers.

Compact modular reclosers 17.5 kV-27 kV, type CMR

CMR medium-voltage compact modular distribution reclosers

  • Maximum design voltage: 17.5 kV or 27 kV
  • Rated short-time withstand current: 12.5 kA
  • Rated continuous current: 630 A
  • Lightning-impulse (BIL): 110 kV or 125 kV
  • As a direct substitute for traditional, single-phase, hydraulic reclosers, the type CMR allows for reduced maintenance with only the rechargeable battery pack having to be replaced. Wireless communications enables in-service reconfiguration and downloading of the event log and load profile.

Learn more about type CMR medium-voltage outdoor distribution reclosers.

Distribution reclosers 15 kV-38 kV, type SDR

SDR medium-voltage distribution reclosers

  • Maximum design voltage: 15 kV, 27 kV, or 38 kV
  • Rated short-time withstand current: 12.5 kA or 16 kA
  • Rated continuous current: 630 A or 800 A
  • Lightning-impulse (BIL): 110 kV, 150 kV, or 170 kV
  • Single-phase, triple-single, or three-phase types available
  • Combining the latest technology in vacuum switching and electronic control, the type SDR distribution recloser is based on decades of experience in circuit breaker design. Customizable control platforms based on either the Siemens or SEL recloser relays contribute to the best operational fit possible.
  • Advanced feeder protection and fault location, isolation, and service restoration (FLISR) schemes.

Learn more about type SDR medium-voltage outdoor distribution reclosers.

Surge arresters 3.0 kV-36 kV

Medium-voltage surge arresters

  • Maximum design voltage for systems from 3.0 to 36.0 kV
  • Type 3EK4 (APS) Siemens surge arresters with APS effectively minimize spark and ember production, thereby helping to mitigate wildfire hazards.
  • Type 3EK7 provides special protection against power surges and has unique mechanical and electrical characteristics.
  • Type 3EK8 is an ideal solution for distribution grid protection. It is available in both heavy-duty and riser-pole applications. 
  • Type 3EJ is a high-energy absorption surge arrester, providing robust protection against high-current surges and temporary overvoltages in medium-voltage systems. It is available for outdoor and indoor installations.
  • Type 3EQ is for applications requiring a surge arrester with extra high strength and a silicone-rubber housing, combined with directional pressure-relief capability.
  • Variety of mounting options and accessories available.

Learn more about medium-voltage surge arresters.

Substation

Outdoor distribution arc-resistant type SDV7-AR and non-arc-resistant type SDV7 15.5 kV-38 kV circuit breakers

SDV7-AR arc-resistant and SDV7 non-arc-resistant outdoor distribution medium-voltage circuit breakers

  • Maximum design voltage: 15.5 kV, 17.5 kV, 27.6 kV or 38.0 kV
  • Rated short-time withstand current: 20 kA-40 kA
  • Rated continuous current: up to 1,200 A, 2,000 A, 2,500 A, or 3,000 A
  • Lightning-impulse (BIL): 110 kV, 150 kV, or 200 kV
  • Type SDV7-AR arc-resistant to IEEE C37.20.7, accessibility type 2B

  • Available with stored-energy or magnetic-actuator operator
  • Pair with Siemens protective relays to match most typical applications.

Learn more about type SDV7-AR arc-resistant and SDV7 non-arc-resistant medium-voltage outdoor distribution circuit breakers.

Station class hookstick 15 kV-38 kV disconnects, type EH

EH station class hookstick medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV or 38 kV
  • Rated continuous current: 600 A, 900 A, 1,200 A, or 2,000 A
  • Lightning-impulse (BIL): 110, kV, 150 kV, or 200 kV
  • Features a square-tubular blade for exceptional mechanical rigidity and electrical conductivity.
  • Off-load disconnection and isolation of substation equipment.

Learn more about type EH medium-voltage station class hookstick disconnects.

Station class hookstick 15 kV-38 kV disconnects, type EHL

EHL station class hookstick medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV or 38 kV
  • Rated continuous current: 600 A, 900 A, or 1,200 A
  • Lightning-impulse (BIL): 110, kV, 150 kV, or 200 kV
  • Equipped with a Saf-T-Gap interrupter, the EHL combines the advantages of the EH with the capabilities of a proven interrupter. The plug-in Saf-T-Gap interrupter is simple to install and remove with a standard shotgun stick.
  • On-load disconnection and isolation of substation equipment.

Learn more about type EHL medium-voltage station class hookstick disconnects.

Station class hookstick 15 kV-38 kV disconnects, type EHTT

EHTT station class hookstick medium-voltage disconnects

  • Maximum design voltage: 15 kV, 25 kV or 38 kV
  • Rated continuous current: 600 A, 900 A, or 1,200 A
  • Lightning-impulse (BIL): 110, kV, 150 kV, or 200 kV
  • Utilizing the advantages of the type EH switch in a tandem-transfer configuration, the EHTT provides an effective and safer means to redirect power when bypassing is required.
  • Substation tandem-transfer switching.

Learn more about type EHTT medium-voltage station class hookstick disconnects.

Voltage regulation

Voltage regulators 2.5 kV-19.9 kV, type JFR 

JFR medium-voltage voltage regulators

  • Maximum design voltage: 2.5 kV-19.9 kV
  • Rated short-time withstand current: 25 times rated current
  • Rated continuous current: 50 A-1,660 A
  • Lightning-impulse (BIL): 60 kV-150 kV 
  • Single phase
  • Help reduce line losses and increase equipment life.

Learn more about type JFR medium-voltage voltage regulators.

Voltage regulators 5.0 kV-34.5 kV, type SFR

SFR medium-voltage voltage regulators

  • Maximum design voltage: 5.0 kV-34.5 kV
  • Rated short-time withstand current: 25 times rated current
  • Rated continuous current: 218 A-2,000 A
  • Lightning-impulse (BIL): 75 kV-200 kV 
  • Three phases
  • Help reduce line losses and increase equipment life.

Learn more about type SFR medium-voltage voltage regulators.

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