# Non-latching push button, PBS-110, 7mm, NO, Yellow

> Non-latching momentary push button PBS-110 with Normally Open (1NO) contact, yellow color. Metal body, panel mount for a 7mm hole, includes a fixing nut. Has 2 terminals and is rated for 250VAC at 1A or 125VAC at 3A. Suitable for panel mounting in equipment and control panels.

- Page: https://sigmanortec.ro/en/non-latching-push-button-pbs-110-7mm-no-yellow
- Price: 2.49 RON
- Availability: In stock; 1-2 zile
- Reference: 9200 · EAN: 5943791268943
- Category: Electronic components > Buttons and Interruptors
- Specifications: Model: PBS-110
- Package (shipping data): 0.004 kg
- Updated: 2026-10-20
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 02:22 (Europe/Bucharest)

## Description

Momentary non-latching push button for quick control in panels and equipment, 1NO Normally Open contact for precise actuation. Easily mounts in a 7mm hole, has a metal body and locking nut for secure attachment, 2 terminals for quick connection. Supports up to 250VAC 1A, yellow finish for immediate identification.
The PBS-110 button is a metal, no-latching button, a momentary push micro switch type, with a Normally Open (1NO) contact, intended for manual controls in panels, enclosures, and electronic equipment. The contact closes while the button is pressed and opens when released, making it suitable for momentary start, reset, sound alert, signaling, DIY project control, and small automations.
The button supports 250 VAC at 1 A or 125 VAC at 3 A and has 2 terminals for solder or clamp connections. The body has a mounting diameter of 7 mm, and the button cap, yellow in color, is 7 mm according to the product data.
Among the main features are no-latching action, 1NO contact, metal body with threaded panel mount, included tightening nut, and the 2 connection terminals. The button does not require its own power supply, as it is a dry contact that switches the circuit in which it is installed.
Being a simple mechanical contact, the button can be used as a digital input for Arduino, ESP32, STM32, Raspberry Pi, or other platforms, with a pull-up or pull-down resistor and, if needed, software or hardware filtering of contact bounce, as well as in DC or AC circuits within the indicated limits.
Specifications:
Supported voltage: 250 VAC or 125 VAC
Maximum current: 1 A at 250 VAC, 3 A at 125 VAC
Operation: No latching
Contact type: 1NO
Terminals: 2
Button diameter: 7 mm
Hole diameter: 7 mm
Mounting: Panel mount, with nut
Color: Yellow
Use:
Do not switch mains voltage with this button unless the installation is disconnected from the mains during connection and the work is done by a qualified person, as mains voltage is dangerous.
Drill a 7 mm diameter hole in the panel or enclosure and check that the wall thickness matches the length of the button thread.
Insert the button into the hole from the front of the panel, then tighten the included nut from the inside, without forcing the thread.
Connect the 2 terminals in series with the controlled circuit, with no regard to polarity, since the button is a dry contact.
Solder the wires or attach clamps to the terminals, insulate the connections, and avoid contact with the metal body of the button.
Do not exceed 250 VAC at 1 A or 125 VAC at 3 A, and for better service life use the button with some margin below the maximum values.
To control a larger load, use the button only to drive a suitable relay or contactor.
To connect it to a development board, connect one terminal to the digital input pin and the other to GND, then enable the internal pull-up resistor or install an external one.
For stable results, handle contact bounce on press and release in software or with a small capacitor.