How do you design a machine panel the inspector signs off on?
Most panel holds at inspection trace back to a part decision made early. The standard the panel is built to, its short-circuit rating, and the listing on each part are all set on the drawing.
The parts that answer it
Power it. Control it. Prove it.One part per decision, each with one fact from its own sheet. The brand name opens that product line.
Walther mechanically interlocked receptacles
On a cord-connected machine, the plug cannot come out or go in with the circuit live, and the handle takes a lock.
The printed fact. The receptacle and the switch are one unit. Walther Electric also builds 30, 60 and 100 A disconnect switches.
Schaltbau C310 and C320 DC contactors
A recognized component is a building block the listed panel can carry, and breaking DC under load is the hard part.
The printed fact. UL Recognized Components to UL 60947-4-1 under file E116641.
IMO contactors and motor circuit breakers
Between the controller's output and the motor sit a contactor and a motor circuit breaker. Their frame and curve decide the nuisance trips and what the inspector reads on the branch.
The printed fact. Contactors from compact through heavy industrial frames, with UL 489 miniature circuit breakers, RCBOs and surge protection beside them.
SATEC PRO series meters
When a customer asks for the measurement to a standard, the accuracy class is printed on the meter.
The printed fact. A Class 0.2S revenue meter and a Class A Edition 3.1 power quality analyzer in one device.
Walther cable assemblies and distribution boxes
A listed assembly arrives with a label the inspector reads, so the listing question leaves the field.
The printed fact. Built to length in Somerset, New Jersey as UL-listed assemblies, labeled and 100% tested.
Conta-Clip KDS split cable entry
The enclosure rating has to hold where the cables come in, on every machine in the run.
The printed fact. IP66 and UL Recognized. The KDS passes a cable with its connector on, one frame in place of a row of glands.
