E-TEN1021 PLC Controller: Advanced Industrial Automation Solution

12 januari 2026

Pre-shipment Inspection Record: This document details the visual and technical inspection of the E-TEN1021 PLC Controller: Advanced Industrial Automation Solution. All product photos and testing videos below are original materials captured first-hand by the Koeed technical team in our warehouse prior to dispatch.

What is the E-TEN1021 toggle switch?

Note on the listing title: the queue titles this article a "PLC Controller" — the part is a toggle switch. The E-TEN1021 is a metal-body ON/OFF toggle switch rated 15 A at 250 VAC: a single-pole single-throw break-before-make switch with two screw terminals, a threaded nickel-plated bushing for panel mounting (lock washer and nut fitted), a chrome lever, and the black OFF / red ON legend plate around the bushing. The body printing reads E-TEN1021 · 15A 250VAC · ON · OFF. This is the panel switch class that runs machine mains directly — heaters, lamps, small motors, power feeds — where a rocker would do the job but a toggle gives the positive hand feel and the visual state at a distance. The photo set shows a bulk lot: two boxes of switches plus ten laid out loose; the intake record books one unit at the recorded purchase price, and both counts are stated as recorded. All 5 photos and 1 video below show these exact switches.

2 min readContent reviewed 8 October 2026

Part details

E-TEN1021, as printed on the body
Field	Value
Model	E-TEN1021
Type	Panel-mount toggle switch, SPST ON-OFF
Rating	15 A / 250 VAC (body print)
Terminals	2 screw terminals with solder/screw lugs
Mounting	Threaded nickel bushing, hex nut and lock washer fitted; round legend plate OFF (black) / ON (red)
Actuator	Chrome-plated metal lever
Quantity	Bulk lot shown (two boxes plus loose units); intake record books one — both as recorded

Scroll sideways to see the full table.

Values are read from the switch body print and the photographed construction in the photo set.

Why the humble toggle still runs the panel

The toggle switch survives in industrial service for mechanical reasons, not nostalgia. The lever's throw is long and positive — an operator can confirm state by feel through gloves, and the position reads across a shop floor, which the red-ON/black-OFF legend plate on this unit makes explicit. The 15 A / 250 VAC rating is the practical headline: it is enough to switch a 3 kW heater, a bank of lamps or a small single-phase motor directly, no contactor needed for the light-duty loads that fill most control panels. The two screw terminals take ring or spade lugs or bare wire, the threaded bushing mounts through a standard round hole with the nut and lock washer shipped in place, and the metal housing grounds itself through the bushing when it lands on a metal panel. Replacements are one-size: the E-TEN1021 format is the industry's common denominator, so a failed switch is a two-minute swap with no re-wiring. The bulk lot photographed here — boxes of them, plus ten loose with the body print legible — reads as a production run into stock; the intake record books a single unit, and the page documents both counts as recorded.