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

> Metal momentary push button PBS-110, non-latching, panel mount for a 7mm hole, supplied with a fixing nut. Normally Open (1NO) contact with 2 terminals. Button and hole diameter: 7mm, black finish. Rated 250VAC at 1A or 125VAC at 3A. Suitable for quick commands in electronic projects and control panels.

- Page: https://sigmanortec.ro/en/non-latching-push-button-pbs-110-7mm-no-black
- Price: 2.49 RON
- Availability: In stock; 1-2 zile
- Reference: 9203 · EAN: 5943868120501
- 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

Metal momentary push button for shortcuts in electronic projects and control panels, mounting in 7mm hole with included nut for secure fixing, 1NO Normally Open contact with 2 terminals, non-latching actuation for precise impulse, black finish and 7mm head, supports up to 250VAC 1A or 125VAC 3A.
The PBS-110 non-latching metal push button is a push-type switch with automatic return to the initial position, intended for momentary controls in control panels, enclosures, and electronic equipment. The contact is normally open (NO), so the circuit closes only while the button is pressed. It is suitable for reset functions, momentary start, signaling, bells, test controls, and automation projects.
The button has a 1NO contact and two terminals and supports 250 VAC at 1 A or 125 VAC at 3 A. The button cap has a diameter of 7 mm, and mounting is done in a panel, in a 7 mm diameter hole.
Among the main features are the metal body with external thread, the black cap, the fixing nut included in the package, non-latching actuation, and the two terminals for solder connection or with connectors. The button does not require its own power supply, as it works as a simple contact in the controlled circuit.
As a dry contact, the button can be used as a digital input for Arduino, ESP32, STM32, Raspberry Pi, and other development boards, with an internal or external pull-up resistor, as well as in DC or AC control circuits, within the indicated voltage and current limits.
Specifications:
Supported voltage: 250 VAC at 1 A, 125 VAC at 3 A
Maximum current: 1 A at 250 VAC, 3 A at 125 VAC
Actuation: Non-latching (momentary)
Contact type: 1NO (normally open)
Terminals: 2
Button diameter: 7 mm
Mounting hole diameter: 7 mm
Mounting: Panel mount, with nut included
Color: Black
Use:
Drill a 7 mm diameter hole in the panel or enclosure, then insert the button through the hole from the outside.
Secure the button by tightening the nut from the package onto the threaded part, without excessive force, so as not to deform the body.
Connect the two terminals in series with the circuit you want to control; the terminals are equivalent, and the button has no polarity.
Do not exceed 250 VAC at 1 A or 125 VAC at 3 A.
If the button switches mains voltage, it is dangerous, and connections must be made only with the circuit disconnected from the mains, by a qualified person.
To use it as a digital input for Arduino, ESP32, STM32, or Raspberry Pi, connect one terminal to GND and the other to the input pin, then enable the internal pull-up resistor or use an external one.
Respect the voltage level accepted by the development board pin and do not apply voltages higher than those allowed to the input.
When soldering wires, keep the heating time of the terminals short, so as not to damage the button's plastic body.
For stable results in digital circuits, handle contact bounce (debounce) in software on press and release.