19mm Momentary Flat Button Switch for Industrial Applications - Local Stock & Specs

Overview

The 19mm momentary flat button switch is a common control element in industrial user interfaces where a low-profile, tactile actuator is required. These switches are typically panel-mounted, available in normally-open (NO), normally-closed (NC) and changeover (SPDT) contact arrangements, and come with various contact ratings, lens colours and legends. The phrase 19mm momentary flat button switch is used throughout this page to describe these compact, short-travel actuators designed for repeated manual operation in industrial environments.

Why choose a 19mm momentary flat button switch?

• Small panel footprint for tight control layouts
• Low profile reduces snagging and improves panel sealing options
• Available in rated currents suitable for control circuits and indicator signalling

Key value propositions from Communica

Communica stocks a wide range of panel switches and accessories from maker-friendly to industrial brands, with local availability from our Samrand head office and branches in Pretoria and Cape Town. For procurement teams we provide VAT invoices and account quoting; hobbyists and students can view category ranges and brands in our online collections.

Check branch hours and collection options for Samrand, Pretoria and Cape Town before ordering to manage lead times: Branches & Trading Hours.

Common technical specifications

Compatibility and accessory considerations

• Ensure panel thickness compatibility - many 19mm switches accept a range (e.g., 0.5-3.5 mm).
• Choose termination type to match wiring practice: quick-disconnect for field wiring, PCB pins for printed boards.
• Consider dust or splash protection and add a bezel or gasket where needed.

Explore related product categories and brands on our collections and shop-by-brand pages for compatible bezels, legends and wiring accessories: 2a-36vdc momentary switches for low-voltage applications and electronic components for diy projects and robotics.

Selection Criteria & Specification Callouts

When selecting a 19mm momentary flat button switch for industrial applications focus on contact rating, mechanical life, termination style and environmental protection. For low-voltage control circuits (12-24 V DC) a 1 A to 3 A contact rating is common; for auxiliary power switching choose higher-rated models where indicated on datasheets.

Electrical calculations and examples

Use Ohm's law and power formulas to validate switch selection. For a resistive load:

V = I × R (Ohm's law)

P = V × I (Power dissipation). Example: switching a 12 V lamp drawing 0.5 A results in P = 6 W, so a switch rated 1 A at 12 VDC would be acceptable. Always allow margin for inrush currents; for inductive loads select a switch with an appropriate AC/DC rating.

Wiring and basic wiring diagram

Panel front
  [ O ]  19mm flat button (momentary)
   |  \
   |   \-- NO terminal -> to controller input (e.g., PLC or microcontroller)
   |   
  Ground/common -> return

For SPDT wiring use the COM, NO and NC terminals to route signal to the desired input depending on button state. Insulate quick-disconnect terminals with recommended boots for vibration-prone installations.

Accessory bundles and compatibility guidance

• Panel mounting kit: includes nut, sealing gasket and optional bezel - useful for improving ingress resistance.
• Wiring bundle: quick-disconnect connectors and crimp sleeves matched to the switch's tab size.
• Legend kit: adhesive or snap-in legends for operator clarity on industrial panels.

Compare available models in person or check real-time stock levels for Samrand before specifying for projects: All Products. For company background and supply reliability information see our about page: About Communica.

Lead times, stock and procurement guidance (South Africa)

Availability varies by model and brand. Typical local stock for common 19mm switches can range from immediate collection at Samrand to 1-3 weeks for less common variants - confirm exact lead times when requesting quotes. Prices and availability are shown in ZAR on product pages and are subject to change; procurement teams can request formal quotes and VAT invoices for tendering and record-keeping.

Troubleshooting and maintenance tips

• Intermittent operation - check for loose terminals and clean contact surfaces if accessible.
• Sticking actuator - inspect for debris around bezel and replace gasket if compressed or damaged.
• Contact failure - confirm current rating and consider relay or solid-state switching for higher currents or inductive loads.

If you need to compare multiple models side-by-side, use the Compare Specs option and Request a Quote for bulk or project pricing: Shop Now, Check Stock in Samrand, Compare Specs, Request a Quote.

Sources

• Communica homepage - product ranges and company information
• Communica branches & trading hours - local collection and branch details
• Communica collections - explore switch accessories and related categories