Building or repairing a machine control station needs an emergency stop that latches down and stays down until someone deliberately resets it. The Techspan PB-BS44 is a red 30 mm mushroom head, turn-to-release operator from Techspan's 22.5 mm metal push button series with a chromium plated bezel. Note that this is the operating head only; control panel builders add a body and contact block to complete it.
Why panel builders pick it
- Turn-to-release mushroom head latches when pressed, so the machine can't restart until it's twisted out.
- Chromium plated metal bezel for industrial panels and stations.
- Fits Techspan's 22.5 mm metal control and signalling unit series.
- Red 30 mm knob, with 40 mm (PB-BS54) and 60 mm (PB-BS64) sizes in the same family.
- Contact blocks are modular, so you choose NC and NO contacts for the job.
Specifications
| Spec |
Detail |
| Brand |
Techspan |
| Model |
PB-BS44 |
| Type |
Mushroom head push button operator, turn to release |
| Knob size / colour |
30 mm / red |
| Series |
Control and signalling units, 22.5 mm metal, chromium plated bezel |
| Included |
Operating head only |
| Required (sold separately) |
Body/contact assembly, e.g. PB-BE102 NC or PB-BE101 NO contact block |
| Related sizes |
PB-BS54 (40 mm), PB-BS64 (60 mm) |
Pro tip from the counter
Wire the stop circuit through a normally closed contact block such as the PB-BE102, not a normally open one. With NC contacts, a broken wire or a loose terminal stops the machine the same way pressing the button does, instead of silently leaving the e-stop dead until the day someone needs it.
Best for: machine control panels, conveyor and pump stations, OEM equipment builds, replacing worn e-stop operators
Ships from Vaughan, ON across Canada. Panel shops can get trade pricing through a quote or at (905) 553-7171.