Single-Panel Panelboards and Switchgear
Last Updated: April 1, 2025
Description
Single-panel panelboards and switchgear are electrical distribution devices designed to convert incoming electrical power into several smaller circuits. They provide overload protection through the use of fuses or circuit breakers. These devices are typically assembled in the form of a single panel, which includes buses and automatic overcurrent devices, and may be equipped with switches for controlling light, heat, or power circuits. They are designed to be placed in a cabinet or cutout box and are accessible only from the front .
Working Principle
Single-panel panelboards and switchgear operate by distributing electrical power from a single source into multiple circuits. They utilize fuses or circuit breakers to protect against overload conditions. Circuit breakers, for instance, are mechanical switching devices capable of making, carrying, and breaking currents under normal and specified abnormal conditions, such as short circuits . The devices can be manually controlled or integrated with automatic systems, such as standby generators, to ensure continuous power supply during failover situations. This functionality makes them essential for maintaining electrical safety and reliability in various settings .
Applications
Single-panel panelboards and switchgear are used in a wide range of applications. They are commonly employed in commercial and industrial facilities to power lighting systems or motors with small electrical loads. Additionally, they are crucial in critical power distribution systems, such as uninterruptible power supply (UPS) and inverter applications, where they ensure that a fault in one circuit does not adversely affect other branches .
Advantages over other Panelboards and Switchgear
Single-panel panelboards and switchgear offer several advantages. They are often more compact and easier to install compared to multi-panel systems, which can save space and reduce installation time. The integration of modular units into a single, factory-assembled system further enhances these benefits by streamlining the setup process and minimizing the need for extensive on-site assembly .
Limitations
One limitation of single-panel panelboards and switchgear is their capacity constraints. They may not be suitable for applications requiring extensive circuit distribution or high power loads, as their design is optimized for smaller, more contained electrical systems. Additionally, their accessibility only from the front can limit maintenance options in certain installations .
Considerations
When considering single-panel panelboards and switchgear, it is important to evaluate initial costs, operating expenses, and durability. These devices can vary significantly in terms of electrical specifications, such as maximum voltage and current, which can impact their suitability for specific applications. Durability and maintenance costs should also be considered, as these factors can affect the long-term reliability and cost-effectiveness of the installation. Ensuring that the devices are capable of handling the required voltage and current levels is crucial for safe and efficient operation .
from R. STAHL, Inc.
Motor switching capacity AC-3 to DIN VDE 0660 / IEC/EN 60947. Isolating switch characteristics. Available for rated operating currents of 16 A to 630 A. Robust enclosures made of. glass fibre-reinforced polyester resin. sheet steel (surge chamber with connection space). Large handle, lockable, black... [See More]
- Panels: Single-Panel
- Phase : Three Phase
- Style: Pole Mounted
- Max. Voltage: 690.00
from Caterpillar Electric Power
Caterpillar offers standard paralleling solutions, which are ideal for use in Distributed system configurations found in Data Center applications as well as Soft Load Automatic Transfer Switch (ATS) applications. The Emergency Transfer Load Manager (EXL) combines standard paralleling controls with... [See More]
- Panels: Single-Panel
- Max. Voltage: 208.00 to 32000.00
- Style: Wall Mount
- Switch Control: Automatic Transfer Control
from SOCOMEC
SIRCOVER PV switches are manual multipolar changeover switches with positive break indication. They ensure source inversion or changeover under load of two photovoltaic installation circuits. Advantages Stable positions. SIRCOVER PV switches have three stable positions which are not affected by... [See More]
- Panels: Single-Panel
- Max. Voltage: 1200.00
- Style: Rack Mounted
- Maximum Current: 200.0 to 630.0
from Siemens Energy Sector
up to 24 kV. up to 25 kA. up to 2000 A. Type-tested, metal-enclosed. Vacuum circuit-breaker withdrawable. Easy operation, maintenance and cable access from front. Automatic metal protection shutter. Max. operating safety by self-explanatory logical operating elements Technical Data. Ratings. kV. [See More]
- Panels: Single-Panel
- Max. Voltage: ? to 24000.00
- Style: Rack Mounted
- Maximum Current: ? to 25000.0
from E-T-A Circuit Breakers Ltd.
The well-proven PowerPlex® Power Module provides redundant protection for your on-board system. A total of 12 electrical loads per module can be controlled and monitored. The Power Modules incorporate a manual override feature for each 8 A and 25 A output by integrated electro-mechanical mini... [See More]
- Panels: Single-Panel
- Max. Voltage: 9.00 to 32.00
- Style: Rack Mounted
- Maximum Current: 102.0
from Aggreko
100 amp Electrical Distribution. Aggreko pays strict attention to our portable power delivery systems to help meet our clients ’ stringent requirements for dependable, high-performance rental equipment. Our rental electrical distribution are precisely matched with our generator rentals. [See More]
- Panels: Single-Panel
- Maximum Current: 100.0
- Style: Ground Mounted
- Main Device: Breakers; Fusible
from Eaton Cooper Power Systems
RVAC pad-mounted vacuum switchgear is designed for applications where frequent 600 A main line switching plus fuse protection are required. It incorporates an interrupter mechanism designed specifically for repetitive switching duty. Vacuum interrupters offer the further advantages of long life in... [See More]
- Panels: Single-Panel
- Style: Pad Mount
from Schneider Electric
Bundles electrical distribution equipment into a single factory assembled and wired integrated system. Combines electrical distribution equipment and building management controls into a single factory-assembled and pre-wired integrated system. Free-standing front and rear aligned integrated... [See More]
- Panels: Single-Panel; Multi-Panel
- Main Device: Breakers
- Style: Ground Mounted
from Caterpillar Electric Power
The EMCP 4.4 Master Control Panel is a wall mounted system that monitors and controls up to eight engine generators for operation in parallel with or without a single utility source. The master panel operates in conjunction with EMCP4.4 paralleling generator controllers via high speed network... [See More]
- Panels: Single-Panel
- Max. Voltage: 208.00 to 38000.00
- Style: Wall Mount
from SOCOMEC
FUSERBLOC are manually operated multipolar fuse combination switches. They make and break on load and provide safety isolation and protection against overcurrent for any low voltage electrical circuit. Advantages Improved safety. • Complete isolation of the fuse with double breaking per pole... [See More]
- Panels: Single-Panel
- Maximum Current: 20.0 to 1250.0
- Style: Rack Mounted
- Main Device: Fusible
from Siemens Energy Sector
up to 36 kV. up to 31.5 kA. up to 2500 A. Type-tested, LSC2B-PM type IAC switchgear according to IEC 62271-200. Air as insulating medium is always available. Evidence of the making and breaking capacity for the circuit-breakers and the make-proof earthing switches inside the panel. Vacuum... [See More]
- Panels: Single-Panel
- Max. Voltage: ? to 36000.00
- Style: Rack Mounted
- Maximum Current: ? to 31500.0
from Aggreko
1200 amp Electrical Distribution. Aggreko pays strict attention to our portable power delivery systems to help meet our clients ’ stringent requirements for dependable, high-performance rental equipment. Our rental electrical distribution are precisely matched with our generator rentals. [See More]
- Panels: Single-Panel
- Maximum Current: 1200.0
- Style: Ground Mounted
- Main Device: Breakers; Fusible
from Eaton Cooper Power Systems
PWE, PWVE electronically controlled, pad-mounted automatic circuit reclosers feature three-phase vacuum interruption in weatherproof and tamper-resistant enclosures. This provides an attractive, compact, and secure package for use in substations, commercial, and residential areas and other... [See More]
- Panels: Single-Panel
- Phase : Three Phase
- Style: Pad Mount
from Schneider Electric
Lighting and Appliance. NF lighting and power distribution panelboards. State-of-the-art in lighting panelboards. Overcurrent protection, automated lighting controls, and plug load control from a standard sized panelboard. Monitor energy use by circuit, zone, or system and enjoy automated lighting... [See More]
- Panels: Single-Panel
- Max. Voltage: 240.00 to 480.00
- Phase : Single Phase
- Maximum Current: 125.0 to ?
from SOCOMEC
FUSERBLOC fuse combination switches combined with high speed fuses (UR) provide optimal breaking and making on load, safety isolation and protection of power semiconductors (variable speed drives, inverters …). Advantages Limitation of short-circuit current. The limitation of short-circuit... [See More]
- Panels: Single-Panel
- Maximum Current: 25.0 to 1250.0
- Style: Rack Mounted
- Main Device: Fusible
from Siemens Energy Sector
up to 17.5 kV / 50 kA / 4000 A. up to 24 kV / 25 kA / 2500 A. Type-tested, IEC62271-200, metal-clad, loss of service continuity category: LSC 2B; partition class: PM; internal arc classification: IAC A FLR ≤ 50 kA 1s. Air as insulating medium is always available. Evidence of the making and... [See More]
- Panels: Single-Panel
- Max. Voltage: ? to 24000.00
- Style: Rack Mounted
- Maximum Current: ? to 50000.0
from Aggreko
5 amp Electrical Distribution. Aggreko pays strict attention to our portable power delivery systems to help meet our clients ’ stringent requirements for dependable, high-performance rental equipment. Our rental electrical distribution are precisely matched with our generator rentals. [See More]
- Panels: Single-Panel
- Maximum Current: 5.0
- Style: Ground Mounted
- Main Device: Breakers; Fusible
from Eaton Cooper Power Systems
MOST pad-mounted switchgear offers economical underground protection and switching. Four switch designs are available; combining multiple functions on one switch permits quicker and more reliable operation. The dead-front, oil-insulated, sealed design offers a low-profile appearance, which compares... [See More]
- Panels: Single-Panel
- Style: Pad Mount
from Schneider Electric
Power Distribution - Circuit Breaker Type. Ideal for service entrance equipment or downstream distribution panels in the electrical system of a large commercial or industrial facility. Space-saving module for value-added digital solutions. Combines I-Line and lighting sections in one panelboard. [See More]
- Panels: Single-Panel
- Main Device: Breakers; Fusible
- Maximum Current: 100.0 to 800.0
from SOCOMEC
FUSERBLOC UL fusible disconnect switches are heavy duty switches that break and make power circuits on and off load. The switches employ double break contacts per pole that ensure complete isolation of the fuse when the switch is in the “OFF ” position. These switches are extremely... [See More]
- Panels: Single-Panel
- Maximum Current: 30.0 to 800.0
- Style: Rack Mounted
- Main Device: Fusible
from Eaton Cooper Power Systems
PST pad-mounted source transfer packages, self-contained devices, provide automatic source transfer and fault protection. Critical customer loads, such as health, educational, financial, and manufacturing facilities, require optimum power quality and reliability. These loads are normally provided... [See More]
- Panels: Single-Panel
- Max. Voltage: 15000.00 to 35000.00
- Style: Pad Mount
from Schneider Electric
Shielded Solid Insulated Switchgear. The new generation of MV switchgear featuring the Shielded Solid Insulation System (2SIS). Gas Insulated Switchgear. Gas-insulated switchgear with solid dielectric busbar for applications up to 38kV. Gas-insulated switchgear with gas-insulated busbar for heavy... [See More]
- Panels: Single-Panel; Multi-Panel
- Max. Voltage: 5500.00 to 38000.00
- Style: Ground Mounted
- Maximum Current: 200.0