XZ-3 waterproof limit switch | XURUI-Zhejiang XURUI Electronics Co., Ltd.

Limit Switch

XZ-3 Series Vertical Waterproof Sealed Limit Switch (3A)

The XZ3 Series Vertical Waterproof Sealed Limit Switch is a compact, fully sealed position detection switch designed for reliable operation in harsh industrial and outdoor environments. Featuring an IP67 protection rating, zinc alloy reinforced construction, double-spring contact mechanism, and integrated cable outlet design, the XZ3 series provides excellent resistance against water, dust, oil, pressure, and mechanical impact.

Rated Load: AC-15: 3A / 250VAC 5A / 125VAC

Protection Degree: IP67

Operating Temperature: -25°C to +70°C

Electrical Life: ≥100,000 Operations

Mechanical Life: ≥1,000,000 Operations

Insulation Resistance: ≥100MΩ (DC500V)

Contact Resistance: ≤100mΩ (Initial Value)

Contact Configuration: 1NO + 1NC

Housing Material: Reinforced Engineering Plastic

Cable Type: Integrated Lead Wire

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Product Features

Suitable for Industrial Automation

Widely used in machine tools, conveyors, packaging machinery, automated equipment, and outdoor industrial systems.
Multiple Actuator Options

Available in plunger, roller plunger, cross roller, adjustable rod, adjustable roller lever, flexible rod, spring rod, and whisker-type actuators.
High Electrical Performance

Low contact resistance and high insulation resistance ensure dependable long-term operation.
Long Service Life

Mechanical endurance exceeds one million operations, supporting demanding industrial applications.
Reliable Position Detection

Provides accurate and repeatable actuation for machine position monitoring and limit control.
Integrated Cable Outlet

Pre-wired cable design simplifies installation and improves sealing performance.
Excellent Environmental Resistance

Designed to withstand humid, dusty, oily, and outdoor operating conditions.
Double Spring Contact Mechanism

Built-in dual-spring structure ensures stable switching performance and enhanced reliability.
Compact Vertical Structure

Slim profile and vertical installation design make it suitable for applications with limited mounting space.
IP67 Waterproof Sealed Design

Fully sealed construction effectively protects against water, dust, oil, and external contaminants.

Product Certification

01Certification for the Chinese market

Compliant with GB national standards, with CCC and CQC certification for domestic sales and bidding compliance.
02EU Market Certification

Comply with CE, RoHS, REACH and EN standards, approved by TÜV & VDE, and support ATEX certification for explosive hazardous areas.
03North American Market Certification

UL, CUL and CSA certified, conforming to North American electrical safety specifications for US and Canada market access.
04Japanese, Korean, and Asian markets

Adapt to Japanese PSE and Korean KC certification, follow JIS and KS local standards to meet market access regulations of Japan and South Korea.

Product Introduction & Process

1

Raw Material Inspection

Metal housings, engineering plastics, silver-alloy contacts, copper terminals, springs, sealing rings, shafts, rollers, and cable glands are inspected before production. Material composition, dimensions, surface condition, hardness, and electrical conductivity are verified according to the relevant specifications.

2

Housing Forming and Machining

Metal housings are produced through precision die casting, while plastic housings are formed by injection molding. Mounting holes, threaded cable entries, shaft openings, and actuator interfaces are subsequently machined to ensure dimensional accuracy and installation compatibility.

3

Deburring and Surface Treatment

Cast and machined components are deburred, polished, and cleaned. Metal parts may undergo zinc plating, nickel plating, electrophoretic coating, or other corrosion-resistant surface treatments to improve durability in industrial environments.

4

Terminal and Contact Manufacturing

Copper-alloy strips are precision stamped to form terminals, contact arms, and conductive components. Silver-alloy contact points are securely riveted or welded onto the contact carriers to provide low contact resistance and stable electrical performance.

5

Spring and Snap-Action Mechanism Production

Springs, contact blades, and elastic components are formed using controlled stamping and bending processes. Spring force, elasticity, hardness, and dimensional consistency are checked to ensure accurate switching action and reliable return performance.

6

Internal Contact Module Assembly

Terminals, fixed contacts, movable contacts, springs, plungers, cams, and insulating components are assembled into the internal switching module. Assembly fixtures are used to maintain the correct contact gap, alignment, and operating sequence.

7

Actuator Head Assembly

Depending on the model, pin plungers, roller plungers, roller levers, adjustable arms, spring rods, or rotary operating heads are installed. Moving components are lubricated where necessary to reduce friction and ensure smooth mechanical operation.

8

Housing Sealing and Final Assembly

The internal switching module is installed into the housing. Gaskets, O-rings, cable glands, terminal covers, and sealing components are assembled to provide protection against dust, oil, moisture, and industrial contaminants.

9

Operating Parameter Calibration

Operating position, release position, pre-travel, over-travel, movement differential, and operating force are measured and adjusted. The actuator must repeatedly switch at the specified position without sticking, excessive friction, or abnormal noise.

10

Electrical Performance Testing

Each unit is tested for contact continuity, contact resistance, insulation resistance, dielectric strength, terminal accuracy, and switching sequence. Normally open and normally closed circuits are verified individually.

11

Mechanical and Environmental Verification

Sample units undergo mechanical endurance, electrical endurance, vibration, impact, temperature, humidity, and ingress protection testing according to the applicable product specification.

12

Final Inspection and Packaging

Product appearance, actuator movement, terminal markings, mounting dimensions, screws, covers, and accessories are inspected. Approved products are labeled, batch-coded, packed, and released for shipment with full traceability.

Customization & Delivery

We support the following types of customization

Electrical Parameter Customization :

Custom voltage & current, AC/DC type, zero-cross or random trigger.
Mounting Structure Customization :

Custom mounting, terminals and non-standard dimensions.
Heat Dissipation & Protection Customization :

Custom heat dissipation, high isolation, potting and anti-corrosion protection.
Function Upgrade Customization :

Overheat/overcurrent protection, anti-interference, delay and soft start optional.
Appearance & Brand Customization

Custom logo, marking, OEM/ODM and personalized solution design.

Proofing Cycle

Regular customization: 3-7 working days
Complex Customization: 7-15 working days
Urgent Sampling: 24-72 hours
Proofing Cost ( $ )

2222 US dollars
MOQ

Conventional products have no minimum order quantity. Customized products can be consulted with customer service
Delivery Time

The delivery time usually varies depending on the quantity and model of the order, usually 3-5 days. For specific times, please consult us

Frequently Asked Questions

How can I get an accurate quotation?

Please provide the product model or drawing, application, voltage and current, actuator or terminal configuration, cable requirements, expected quantity, destination market and required certifications. The more complete the information, the faster we can recommend a suitable solution and prepare an accurate quotation.
What is not covered by the warranty?

The warranty does not cover damage caused by incorrect wiring, excessive electrical load, improper installation, unauthorized modification, misuse, normal wear or operation outside the product’s specified environmental conditions. Final warranty coverage is subject to the applicable product specification and sales agreement.
What does the product warranty cover?

The warranty covers verified defects in materials or manufacturing under the specified operating and installation conditions. Depending on the case, XURUI may provide technical analysis, replacement parts, repair or product replacement in accordance with the agreed warranty terms.
What is your standard production lead time?

Lead time depends on product type, order quantity, material availability and customization requirements. Standard products generally have shorter lead times, while customized products require additional time for approval, tooling or validation. The confirmed delivery schedule will be stated in the quotation.
Which certifications and compliance documents are available?

Certifications vary by product series and target market. Applicable certificates, test reports and material compliance documents can be provided for qualified models. Please confirm the exact product number and destination market before requesting documentation.
Can you support samples and small trial orders?

Yes. We support sample orders and small trial orders for most standard products. The minimum order quantity depends on the product series, specifications and packaging requirements. Please send us the part number or application details for confirmation.
What customization services do you offer?

We provide OEM and ODM support, including actuator structures, terminals, cables, connectors, electrical ratings, housing colors, labels and packaging. Each request is reviewed for technical feasibility, tooling requirements, testing and expected order volume.
How long does custom sample development take?

Sample lead time depends on the level of customization. Changes ivolving existing components are generally faster, while new molds, special materials or additional validation require more time. A confirmed schedule will be provided after reviewing your drawings and specifications.
How are custom sample costs calculated?

Sample costs may include materials, tooling, engineering, testing and certification-related expenses. We provide a detailed quotation before development begins. Any arrangement for refunding or crediting sample fees will be stated clearly in the quotation.
How do you ensure product traceability?

Key materials, production batches, assembly records and test results are controlled through lot identification. This allows us to trace products back to relevant materials, production dates and inspection records when required.
What quality inspections are performed?

Our quality process includes incoming material inspection, in-process control, functional testing and final inspection. Product-specific checks may include operating force and travel, contact resistance, insulation resistance, dielectric strength, sealing performance, temperature rise and endurance validation.

ltem		Data
Rating load		AC-15 3A/250VAC;5A/125VAC
Operation frequency	Mechanical	60 times/min
Operation frequency	Electrical	30 times/min
Insulation resistance		100mΩ Above DC500V
Contact resistance		100mΩ initial value
Withstand voltage	Non-connection wire	1000VAC
Withstand voltage	Every terminal	1500VAC
Vibration	Misoperation	10-55Hz Amplitude 1.5mm
lmpact	Durable	1000m/s²
lmpact	Misoperation	300m/s²
Life	Electrical	100,000 Ops above
Life	Mechanical	1.000,000 Ops above
Protection degree		IP67
Operating temperature		-25~+70℃
Operating humidity		< 85%