OEX ACX3438 IP65 Emergency Stop Switch 40mm Mushroom Head Latching Turn-to-Release NC and NO Contacts 3A 12V and 24V The OEX ACX3438 is a 40mm mushroom head emergency stop switch with a latching push button and turn-to-release mechanism, rated at 3A at 12V or 24V. Designed for safety-critical circuit interruption, it provides a clearly visible, easily activated stop function for automotive, marine, caravan and industrial control applications. Once pressed the switch latches in the off state and remains there until deliberately released by rotating the head. Provides both a normally closed (NC) and normally open (NO) contact. IP65 weatherproof enclosure. 69x86mm. Internal or external mount. Covered by a one year warranty. Product overview An emergency stop switch (E-stop) is a safety device designed to interrupt a circuit immediately when activated. The large 40mm mushroom head is highly visible and easy to activate quickly under stress. The latching mechanism means the switch stays in the activated (off) state after being pressed and will not reset automatically the mushroom head must be physically rotated to release the latch before the circuit can be restored, preventing accidental re-energisation after an emergency stop event. The ACX3438 provides two contacts: a normally closed (NC) contact that is connected at rest and opens when the button is pressed, and a normally open (NO) contact that is disconnected at rest and closes when the button is pressed. The NC contact is used to directly break a control circuit on activation. The NO contact is used to signal a controller, relay or alarm. At 3A the ACX3438 is rated for control circuit switching only — it should trigger a relay, contactor or solenoid such as the OEX ACX3322 rather than directly switching a high-current main power load. The IP65 enclosure provides full dust protection and water jet resistance for external and exposed mounting locations. Features and benefits 40mm mushroom head latching push button: Large, highly visible actuator that is easy to activate under stress. Latches in the depressed position on activation. Turn-to-release mechanism: The switch remains latched until the mushroom head is physically rotated to release, preventing accidental re-energisation after an emergency stop event. 1 normally closed (NC) contact: Circuit is closed at rest and opens when the button is pressed. Standard wiring for direct control circuit interruption. 1 normally open (NO) contact: Circuit is open at rest and closes when the button is pressed. Used to signal a controller, relay or alarm on activation. IP65 weatherproof enclosure: Fully sealed against dust and protected against water jets from any direction. Suited to external and exposed mounting locations. 12V and 24V compatible: Suits both passenger vehicle and commercial vehicle systems. 3A rating control circuit switching only: Designed to trigger a relay, contactor or solenoid rather than directly switching a high-current main power load. Pair with the OEX ACX3322 solenoid or a suitable relay for main power interruption. Internal or external mount: Flexible installation for dash panels, control boxes, bulkheads and external equipment enclosures. One year warranty: Covered by a one year OEX warranty. Technical specs Specification Detail SKU ACX3438 Brand OEX Type Emergency Stop Switch Switch Action On/Off, Off/On (Latching) Actuator 40mm mushroom head Activation Push to latch Release Turn to release Contacts 1x Normally Closed (NC), 1x Normally Open (NO) Current Rating 3A Voltage 12V and 24V IP Rating IP65 Mount Options Internal or external Dimensions 69mm x 86mm Illumination Non-illuminated Pack Quantity 1 Weight 0.3kg Warranty One year Sold As Single unit Frequently asked questions What is an emergency stop switch? An emergency stop switch (E-stop) is a safety device designed to interrupt a circuit immediately when activated. The large mushroom head design makes it highly visible and easy to hit quickly in an emergency. The latching mechanism means it stays in the activated (off) state after being pressed the switch must be deliberately rotated to release before the circuit can be restored. What does "turn to release" mean? After the mushroom head is pressed and latches, the switch will not reset automatically. To release the latch and restore the circuit, the mushroom head must be physically rotated (typically clockwise) until it clicks back to the normal position. This deliberate action prevents accidental re-energisation after an emergency stop event. What is the difference between the normally closed and normally open contacts? The normally closed (NC) contact is connected at rest and opens when the button is pressed wiring the circuit through the NC contact will break it immediately on activation. The normally open (NO) contact is disconnected at rest and closes when the button is pressed this is used to signal a controller, relay or alarm on activation. The ACX3438 provides both contacts for flexible integration into control systems. Can this switch directly interrupt a main battery circuit? No. At 3A, this switch is rated for control circuit switching only. It should trigger a relay, contactor or solenoid rather than directly switching the main power load. For main power interruption, pair this switch with a relay or solenoid such as the OEX ACX3322. Is this switch weatherproof? Yes. The IP65 rating confirms full dust protection and resistance to water jets from any direction, making it suitable for external mounting and exposed installation locations including vehicle exteriors, boat applications and equipment enclosures. Legendary Products & Support From Authorized Dealers When you choose Frankies BrandBeast, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice: ▸ Expert Knowledge & TrainingOnly authorized Frankies BrandBeast dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations. ▸ Authorized Warranty ProtectionWe offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don’t be misled by unauthorized sellers who can’t provide genuine warranty support. ▸ Reliable Customer SupportIf you ever run into an issue, you’re backed by Frankies BrandBeast’s official manufacturer’s warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently. ▸ Protect Your InvestmentBuying from an authorized dealer ensures you’re getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few bucks worth losing all that? Choose wisely. Buy from Frankies BrandBeast today! h2, h3 { color: #000080 !important; } h2 { font-weight: bold; margin-top: 1rem; margin-bottom: 0.5rem; } h3 { font-weight: bold; margin-top: 1rem; margin-bottom: 1rem; }
Related
Related
Related
Related