Build and test hardwired control circuits — DOL starters, relay logic, VFDs — in your browser. Inject faults, then find them with a real multimeter.
No install · No sign-up · Any browser · IEC & ANSI
Eleven built-in presets, fully interactive — press the buttons, watch the current flow, trip the protection. Build from these or start from scratch.
The foundation of hardwired motor control. A CR contact holds the circuit closed after you release the start button.
FUNDAMENTAL
MCCB, contactor poles and thermal overload feeding a 3-phase motor. Single-phase the motor and watch the overload heat up and trip.
MOTOR CONTROL
Three-phase supply, drive and motor with 3-wire control. Overload the motor and the drive OC-trips — reset it on DI3, like the real thing.
DRIVESTwo audiences. One tool. Different reasons it saves them time.
Hardwired control circuits appear in every electrical apprenticeship assessment. Most students only get to practise them during lab sessions — limited time, shared equipment, instructor waiting.
PickettPanel gives you unlimited practice time. Build the circuit at home, understand why the seal-in contact works before you wire a real panel.
A wiring error on a commissioned panel costs time, credibility, and sometimes components. Proving the control circuit logic before you wire is faster than tracing faults after.
PickettPanel Lite already exports IEC-style PDF schematics with wire numbers and title blocks. A Pro version with production-style drawings, more components and testing tools is in the works.
PickettPanel Lite is out now — free, in your browser, no sign-up. Open it and load a preset.
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No spam. Occasional updates and the Pro launch — that's it.
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Everything you see here runs live in your browser — no plugins, no install.
Yes — PickettPanel Lite is free and runs entirely in your browser, no sign-up. It includes the full simulator: motor control, VFD drives, fault injection, the multimeter, PLC ladder logic and PDF export. A Pro version with testing tools, fault-finding scenario packs, more components and professional drawings is planned.
Start/stop stations with seal-in, indicator logic, on-delay timers, DOL motor starters with a thermal overload, and VFD drive circuits with a 3-phase motor. Protection trips realistically — fuses on I²t, overloads thermally, MCCBs with thermal + instantaneous elements, and the drive's own electronic overload.
Yes. Inject broken wires, welded contacts, open coils, motor winding faults, single phasing or drive faults — or let the random-fault trainer hide one. Then find it with the multimeter: the leads stay attached while you operate the circuit, and it reads continuity, phase-to-neutral (~230V) and line-to-line (~400V) like a real installation.
Yes, in IEC or ANSI. Tools → Drawing Symbols switches the canvas between the panel view, IEC 60617 (Europe, UK and Ireland) and ANSI / NFPA 79 (North America). IEC drawings carry standard terminal markings: A1-A2 coils, 13-14 and 21-22 contacts, 1-2 / 3-4 / 5-6 contactor poles, 95-96 overload trip contact. Drive terminals are L1/L2/L3 in, U/V/W out. PDF export produces ladder diagrams and field wiring drawings with title blocks in either standard.
Electrical apprentices and trades students preparing for practical assessments, instructors who want a live teaching aid for control circuits and fault finding, and panel builders who want to prove control logic before wiring.
