The Auspicious A16LMS3R2N is a 16mm Emergency Stop Button designed for machine safety circuits where the operator needs to bring equipment to an immediate halt. Press the head and it latches down, holding the contacts open until someone deliberately twists the head to release it. That latching action is what separates a true emergency stop from an ordinary stop button, since the machine cannot restart the moment the operator lets go.

Two normally closed contacts give the wiring flexibility most safety circuits need. One pair can break the control supply while the second feeds a safety relay or monitoring input, giving the dual channel arrangement many machine standards call for. Because the contacts are normally closed, a broken wire or a failed connection drops the circuit out rather than leaving it silently unprotected.

The 16mm mounting diameter suits compact panels, handheld pendant stations and small machine consoles where a 22mm head would be too large. IP65 protection on the front face keeps dust and washdown water out, so it holds up in workshops and food processing areas. UL, TUV, CE and CSA approvals cover it for export machinery and inspected installations.

Key Features

Latching operator holds the circuit open until deliberately released
Twist to release reset prevents accidental restart
Two normally closed contacts support dual channel safety wiring
Compact 16mm mounting diameter for tight panels and pendants
IP65 protection against dust and low pressure water jets
UL Listed, TUV, CE Mark and CSA certified
Round red head follows standard emergency stop convention
Light 0.02kg body suited to handheld stations

Technical Specifications

Specification	Detail
Product Type	Emergency Stop Switch
Series	A16LMS
Model	A16LMS3R2N
Mounting Diameter	16mm
Head Shape	Round
Type of Operator	Latching
Reset Method	Turn to Release
Contact Composition	2 NC
Degree of Protection	IP65
Certification	UL Listed, TUV, CE Mark, CSA
Brand	Auspicious
Country of Origin	Taiwan
Weight	0.02kg
SKU	A16LMS3R2NC

Common Applications

Machine control panels and consoles, handheld pendant stations for hoists and cranes, conveyor and packaging line stop stations, laboratory and test equipment, CNC and workshop machinery, food processing equipment where washdown occurs, and any control station where an operator must stop motion immediately.

Related Emergency Stop and Push Button Options

Contact configuration is usually what drives the choice. If your safety circuit also needs a normally open contact for signalling or status feedback, the 16mm emergency stop switch with 2NC and 2NO contacts A16LMSS4R covers that from the same A16LMS series and shares the identical mounting cutout.

For the full selection of latching heads, contact blocks and larger 22mm bodies, see the emergency stop collection. Emergency stops are usually specified alongside start, stop and reset controls, so browse the push buttons and emergency stop range for matching operators, or the wider push buttons and indicators category for pilot lights and indicator lamps to complete the console.

Why Buy From Qahraba

Qahraba supplies electrical contractors, panel builders and procurement engineers across the UAE and worldwide. Every Emergency Stop Button we stock is genuine Auspicious product with full certification. Local UAE orders ship within 1 to 2 working days, free above AED 250, or collect free from our Dubai store. Call or WhatsApp +971 52 913 9543 to check availability or request bulk pricing.

FAQ

What is an Emergency Stop Button?

It is a manually operated safety device that immediately breaks the control circuit of a machine when pressed. The head latches in the pressed position so power cannot be restored until an operator deliberately resets it.

How do you reset this Emergency Stop Button?

Twist the red head clockwise until it pops back out. The contacts close again once the head returns to its raised position.

What does 2NC mean on an emergency stop?

It means the switch carries two normally closed contact pairs, which are closed during normal operation and open when the button is pressed. Two pairs allow dual channel wiring to a safety relay.

Why do emergency stops use normally closed contacts?

So that any break in the wiring, such as a cut cable or loose terminal, has the same effect as pressing the button. The circuit fails safe instead of failing silently.

What is the panel cutout for a 16mm button?

A 16mm diameter hole. This is smaller than the more common 22mm standard, so check your existing panel before ordering.

What does IP65 mean here?

IP65 means the front face is fully dust tight and protected against low pressure water jets from any direction, suitable for workshop and washdown environments.

16mm Emergency Stop Button Latching Twist to Release 2NC IP65 A16LMS3R2N Auspicious