LA38-11ZS 22mm White Arrow Emergency Stop Switch

Products Introduction
The LA38‑11ZS White Arrow Emergency Stop Push Button is a specialized safety control component designed for heavy‑duty industrial grids. This specific unit belongs to the LA38‑11ZS series and is characterized by its high‑visibility "White Arrow" mushroom head. It provides a decisive physical lockout mechanism, ensuring that power is cut immediately upon activation to prevent machine accidents. The white arrows on the actuator provide clear visual instructions for resetting the switch, making it an essential part of factory safety protocols.
Technical Specifications
The electrical integrity of this unit is verified by the factory data plate, ensuring full compliance with the GB/T 14048.5 standard for low‑voltage switchgear.
- Rated Insulation Voltage (Ui): 660V
- Conventional Thermal Current (Ith): 10A
- Rated Impulse Withstand Voltage (Uimp): 6kV
- Contact Logic: 1NO 1NC (One Normally Open + One Normally Closed)
- Safety Certifications: CE, UL (cRUus), CCC, CB, CQC, RoHS
Product Appearance & Dimension
As a standard 22mm Push Button Switch, this model allows for a direct drop‑in fit for global machinery control panels.
- Mounting Diameter: 22mm standard panel cutout
- Mushroom Head Diameter: 40mm high‑contrast red actuator
- Total Height: 78mm when in the unlocked/ready position
- Base Dimensions: 32mm width by 29mm depth
- Behind‑Panel Depth: Approximately 38.25mm for compact wiring
Typical Applications
The LA38‑11ZS is widely utilized as a Machine Emergency Stop Button in various mission‑critical environments:
- CNC Machine Tools: Provides immediate circuit interruption during tool collisions or vibration faults.
- Automated Conveyors: Serves as the central safety cutoff point for high‑speed assembly lines.
- Industrial Enclosures: Fits perfectly into power distribution cabinets and remote control stations.

Safety Logic & Reliability
This Machine Emergency Stop Button follows a strict press-to-lock and turn-to-release sequence defined by its high-contrast white arrows. Once depressed, the internal spring mechanism locks the Mushroom Emergency Stop Switch in the "OFF" position until manual rotation in the arrow-marked direction is applied. To ensure reliability under heavy loads, this industrial safety switch is equipped with thickened silver alloy contacts optimized for a continuous 10A thermal current. The control panel push button further enhances performance through a self-cleaning contact action that prevents oxidation and contact welding in dusty workshop environments.
Manufacturer & Company Advantages
Jiangxi Nanma Electrical Co., Ltd is a direct industrial push-button switch manufacturer with over a decade of specialized R&D experience. Our factory implements standardized production workflows and a full-spectrum quality inspection system. Every batch of the Emergency Stop Push Button undergoes rigorous testing for electrical continuity, mechanical lifecycle, and environmental resistance. We provide global buyers with stable bulk supply, custom labeling, and direct OEM solutions.