Electrical Symbols — Switches and Relays

In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another. The mechanism of a switch may be operated directly by a human operator to control a circuit (for example, a light switch or a keyboard button), may be operated by a moving object such as a door-operated switch, or may be operated by some sensing element for pressure, temperature or flow. A relay is a switch that is operated by electricity. Switches are made to handle a wide range of voltages and currents; very large switches may be used to isolate high-voltage circuits in electrical substations. 26 libraries of the Electrical Engineering Solution of ConceptDraw PRO make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.

How To use House Electrical Plan Software

Electrical and Telecom Layout House Plan, electrical symbols

How we can conduct the electricity at house correctly without a plan? It is impossible. The House electrical diagram depicts locations of switches, outlets, dimmers and lights, and lets understand how you will connect them. But design of House Electrical Plan looks a complex task at a glance, which requires a lot of tools and special experience. But now all is simple with all-inclusive floor plan software - ConceptDraw PRO. As a house electrical plan software, the ConceptDraw PRO contains libraries with a large range of professional lighting and electrical symbols, ready-to-use electrical plans samples and examples, and built-in templates for creating great-looking Home floor electrical plans. It is a fastest way to draw Electrical circuit diagrams, Electrical wiring and Circuit schematics, Digital circuits, Electrical equipment, House electrical plans, Satellite television, Cable television, Home cinema, Closed-circuit television when are used the tools of Electric and Telecom Plans Solution from ConceptDraw Solution Park. Files created in Visio for Mac app can be easily imported to ConceptDraw PRO. Also you may import stencils and even libraries. Try for free an alternative to Visio that Apple users recommend.

Create an Electrical Diagram

Electrical Symbols — Stations

A power station is an industrial facility for the generation of electric power. Most power stations contain one or more generators, a rotating machine that converts mechanical power into electrical power. The relative motion between a magnetic field and a conductor creates an electrical current. The energy source harnessed to turn the generator varies widely. Most power stations in the world burn fossil fuels such as coal, oil, and natural gas to generate electricity. Others use nuclear power, but there is an increasing use of cleaner renewable sources such as solar, wind, wave and hydroelectric. 26 libraries of the Electrical Engineering Solution of ConceptDraw PRO make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.

Switches and relays - Vector stencils library

SPST

SPDT

DPST

DPDT

Make contact

Break contact

Two way contact

Passing make-contact

Spring return

Stay put

Limit switch

Circuit breaker

Spring return 2

Spring return 3

Limit switch n/o

Limit switch n/c

2 position switch

3 position switch

4 position switch

Manual switch

Pushbutton make

Pushbutton break

Pushbutton 2-circuit

Selector switch

Shorting selector

Proximity limit switch

Time delay make

Time delay break

Time delay make 2

Time delay break 2

Safety interlock

Flow actuated

Liquid level actuated

Liquid level actuated 2

Gas flow actuated

Pressure actuated

Temperature actuated

Thermostat

Temperature switch

Inertia switch

Mercury switch

Mercury switch 2

Fuse

Switch disconnector

Isolator

Change-over contact

Relay contacts

Relay coil

Pilot light

Pilot light, push-to-test

Relay, alternating-current

Relay, magnetically polarized

Relay, slow-operate

Relay, slow-release

Relay

Relay, high speed

Relay, mechanically latched

Relay, permanent

Used Solutions

Engineering >

Electrical Engineering

Design elements - Switches and relays

The vector stencils library "Switches and relays" contains 58 symbols of electrical contacts, switches, relays, circuit breakers, selectors, connectors, disconnect devices, switching circuits, current regulators, and thermostats for electrical devices.
"In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.
The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits. Each set of contacts can be in one of two states: either "closed" meaning the contacts are touching and electricity can flow between them, or "open", meaning the contacts are separated and the switch is nonconducting. The mechanism actuating the transition between these two states (open or closed) can be either a "toggle" (flip switch for continuous "on" or "off") or "momentary" (push-for "on" or push-for "off") type.
A switch may be directly manipulated by a human as a control signal to a system, such as a computer keyboard button, or to control power flow in a circuit, such as a light switch. Automatically operated switches can be used to control the motions of machines, for example, to indicate that a garage door has reached its full open position or that a machine tool is in a position to accept another workpiece. Switches may be operated by process variables such as pressure, temperature, flow, current, voltage, and force, acting as sensors in a process and used to automatically control a system. ... A switch that is operated by another electrical circuit is called a relay. Large switches may be remotely operated by a motor drive mechanism. Some switches are used to isolate electric power from a system, providing a visible point of isolation that can be padlocked if necessary to prevent accidental operation of a machine during maintenance, or to prevent electric shock." [Switch. Wikipedia]
"A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re-transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.
A type of relay that can handle the high power required to directly control an electric motor or other loads is called a contactor. Solid-state relays control power circuits with no moving parts, instead using a semiconductor device to perform switching. Relays with calibrated operating characteristics and sometimes multiple operating coils are used to protect electrical circuits from overload or faults; in modern electric power systems these functions are performed by digital instruments still called "protective relays"." [Relay. Wikipedia]
The shapes example "Design elements - Switches and relays" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.

Switch and relay symbols

Used Solutions

Engineering >

Electrical Engineering

Electrical Symbols — Rotating Equipment

Electrical rotating machines, such as motors and generators, are vital assets for any power plant or large industrial company. An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this would be the conversion of mechanical energy into electrical energy and is done by an electric generator. In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy. 26 libraries of the Electrical Engineering Solution of ConceptDraw PRO make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.

Electrical and telecom - Vector stencils library

The vector stencils library "Electrical and telecom" contains 83 symbols of electrical and telecommunication equipment.
Use these shapes for drawing electrical and telecom system design floor plans, cabling layout schemes, and wiring diagrams in the ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Electrical and telecom" is included in the Electric and Telecom Plans solution from the Building Plans area of ConceptDraw Solution Park.

Luminaire ceiling mount

Enclosed ceiling luminaire

Wall light

1-light bar

2-light bar

4-light bar

6-light bar

8-light bar

Down lighter

Outdoor lightning

Outdoor lightning, bollard

Batten fluorescent, 1 lamp

Batten fluorescent, 2 lamps

Batten fluorescent, 3 lamps

Batten fluorescent, 4 lamps

Surface Fluorescent Light

Modular fluorescent fitting

Modular fluorescent fitting, inverter

Modular fluorescent fitting 2

Pull-cord switch

Emergency light

Emergency light 2

Emergency sign

Switch

Switch, 1 pole

Switch, 2 pole

Switch, 2-way

Multi-switch

Switch, intermediate

Dimmer switch

Dimmer switch 2

Socket

Socket 2

Switched socket

Switched socket 2

Double socket

Double socket 2

Socket outlet

Telephone outlet

Telephone outlet 2

Stereo outlet

Television outlet

Service panel, surface

Service panel, inset

Thermostat

Ceiling fan

Hold open unit

Detector

Fire alarm

City Fire Alarm Station

Fire Alarm Station

Fire Alarm Bell

Fire Alarm Central Station

Automatic Fire Alarm Device

Main control

Ground

Doorbell

Push Button

Buzzer

Annunciator

Horn

Maid's Signal Plug

Signal Central Station

Doorbell Chime

Doorbell Transformer

Magnetic Door Hold

Intercom

Telephone Key System

Digital Satellite System

Inside Antenna

Outside Antenna

Electric Motors

Single Phase

Three of Poly Phase

Wall Mounted Electrical Junction Box for Hardware

Wall Mounted Telephone/Data Junction Box for Hardware

Card Reader Access System

Emergency Release Button

Motion Sensor

Electric Door Opener

Watchman's Station

Watchman's Central Station

Battery

Used Solutions

Building Plans >

Electric and Telecom Plans

Design elements - Alarm and access control

The vector stencils library Alarm and access control contains 80 symbols of digital proximity equipment, locking hardware, and access control equipment.
"An alarm device or system of alarm devices gives an audible, visual or other form of alarm signal about a problem or condition. Alarm devices are often outfitted with a siren." [Alarm device. Wikipedia]
"An access control point, which can be a door, turnstile, parking gate, elevator, or other physical barrier, where granting access can be electronically controlled. Typically, the access point is a door. An electronic access control door can contain several elements. At its most basic, there is a stand-alone electric lock. The lock is unlocked by an operator with a switch. To automate this, operator intervention is replaced by a reader. The reader could be a keypad where a code is entered, it could be a card reader, or it could be a biometric reader. Readers do not usually make an access decision, but send a card number to an access control panel that verifies the number against an access list. To monitor the door position a magnetic door switch can be used. In concept, the door switch is not unlike those on refrigerators or car doors. Generally only entry is controlled, and exit is uncontrolled. In cases where exit is also controlled, a second reader is used on the opposite side of the door. In cases where exit is not controlled, free exit, a device called a request-to-exit (REX) is used. Request-to-exit devices can be a push-button or a motion detector. When the button is pushed, or the motion detector detects motion at the door, the door alarm is temporarily ignored while the door is opened. Exiting a door without having to electrically unlock the door is called mechanical free egress. This is an important safety feature. In cases where the lock must be electrically unlocked on exit, the request-to-exit device also unlocks the door." [Access control. Wikipedia]
Use the design elements library Alarm and access control for drawing layout floor plans, blueprints, and wiring diagrams of intrusion systems, time and attendance systems, card and code access control security systems, internal and external security control systems using the ConceptDraw PRO diagramming and vector drawing software.
The shapes library Alarm and access control is included in the Security and Access Plans solution from the Building Plans area of ConceptDraw Solution Park.

Alarm and access control symbols

Used Solutions

Building Plans >

Security and Access Plans

Comparing ConceptDraw PRO to Omnigraffle

Comparing ConceptDraw PRO to Omnigraffle you can see a lot of benefits of ConceptDraw products. First the main, ConceptDraw applications are cross-platform and available in two independent and concurrent versions for Macintosh (OS X) and PC (Windows). ConceptDraw gives you the per named license, that you can use simultaneously for your both Macintosh and PC, at work and at home. Free access to the ConceptDraw Solution Park offers you great number of solutions with hundreds of templates and samples, and thousands of ready-to-use vector objects for quick and easy creation diagrams, drawings, illustrations and Mind Maps. Besides, thanks to the Ingyre Technology is provided the integration with Microsoft Office applications and capabilities of limitless exchange the information. The ConceptDraw Live Objects technology lets you design the visual dynamically-updated dashboards, the Rapid Draw technology allows create the diagrams in minutes. The extensive presentation capabilities help you create lush and beautiful presentation slideshows from your ConceptDraw documents.