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  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
  • Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition
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Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition

  • >= 1 Pieces
    $200
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Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Safety Limit Switch for Cranes: Designed to prevent overtravel and two-block accidents in mobile cranes (up to 50 tons), ensuring operational safety by halting machinery movement at predefined limits.
  • Versatile Electrical Compatibility: Supports a broad voltage range (12-380V) and 5A current rating, enabling reliable performance across diverse industrial electrical systems.

Key features

  • 1. Material Technology

    • With a corrosion-resistant metal body (steel/aluminum), you can ensure long-lasting durability in harsh industrial environments*.

  • 2. Interactive Design

    • With a versatile circular mounting hook design, you can easily adapt to diverse crane configurations for quick installation*.

  • 3. Performance Parameters

    • With a wide voltage compatibility range (12-380V), you can operate seamlessly across various industrial systems compared to limited-range alternatives*.

  • 4. Scenario Solutions

    • Compatible with major crane brands like Zoomlion and Sany, you can ensure seamless integration into existing 50t mobile crane systems*.

  • 5. Certification Standards

    • Complies with industrial safety standards, ensuring reliable protection in critical lifting scenarios*.

Product details

Weite A2B Anti Two Block Safety Devices Limit Switches for Mobile Crane 50t New Condition

The Weite A2B Anti Two Block Safety Devices Limit Switches are industrial-grade safety solutions designed for mobile cranes (50t capacity). Built with durable metal (steel/aluminum), these switches feature a robust rectangular design with a circular hook mount, ensuring secure installation. Compatible with Zoomlion and Sany crane brands, they offer a 1-year shelf life and operate across a wide voltage range (12–380V), ensuring reliability in harsh environments.

Technical specifications

FeatureSpecificationBenefit
MaterialSteel/Aluminum (customizable)Enhanced durability and corrosion resistance
Voltage Range12–380VVersatile compatibility with industrial systems
Current Rating5ASafe operation under moderate electrical loads
Mounting TypeCircular HookFlexible installation on machinery
Safety ComplianceCE Certified, IP65 (Base Model)Meets global safety standards and dust/water resistance
Model CompatibilityZoomlion, SanyDirect fit for popular crane brands

Customization guide

  • Material Customization: Adjust metal alloy composition to withstand extreme temperatures or corrosive environments.
  • Mounting Adaptation: Modify hook dimensions or add brackets for non-standard crane configurations.
  • Safety Enhancement: Upgrade to IP67 (Pro Model) for submersion resistance in wet environments.

Get inspired

Ensure crane safety with the Weite A2B Limit Switches. Their anti-two-block mechanism prevents overtravel, while the broad voltage range accommodates diverse crane systems. Ideal for construction sites, these switches combine rugged durability with precise control, reducing downtime and enhancing operator safety.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Load Capacity50t+15% (57.5t)+30% (65t)*
Response Time0.5s0.4s (20% faster)0.3s (40% faster)
Environmental RatingIP65IP66IP67
CertificationsCECE + RoHSCE + RoHS + UL

Supplier's note

  1. Technical Breakthroughs:

    • Wide Voltage Range (12–380V): Operates seamlessly across global power systems without voltage converters.
    • Enhanced Load Capacity (Pro Model): Supports 65t cranes, exceeding industry standards by 30% for heavy-duty applications.
    • Customizable Materials: Alloy variants reduce maintenance in corrosive coastal or chemical plant environments.

  2. Version Selection Guide:

    • Base Model: Suitable for standard 50t cranes in dry, controlled environments (e.g., indoor warehouses).
    • Advanced Model: Ideal for outdoor construction sites needing faster response times (0.4s) and IP66 dust/water resistance.
    • Pro Model: Required for offshore or chemical facilities where IP67 submersion resistance and UL certification ensure compliance with strict safety protocols.

Pro Model’s 65t capacity allows safe operation in heavy-lift scenarios, such as bridge construction, while its 0.3s response time minimizes reaction delays during emergencies. Pair with corrosion-resistant stainless steel to extend lifespan in marine environments.

Frequently asked questions

  • Which Weite A2B Limit Switch model is best suited for Zoomlion or Sany mobile cranes up to 50 tons?

  • How do I maintain the Weite A2B Limit Switch in harsh industrial environments?

  • What material is the Weite A2B Limit Switch made of, and why is it better for crane safety?

  • Can the Weite A2B Limit Switch be customized for specific mounting needs on cranes?

  • Is the Weite A2B Limit Switch voltage-compatible with 400V industrial systems?

  • What safety features does the Weite A2B Limit Switch include for mobile crane operations?

  • How does the Weite A2B Limit Switch prevent overtravel in 50t mobile cranes?

  • What’s the shelf life of the Weite A2B Limit Switch, and how should it be stored?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Voltage CompatibilityMobile cranes (Zoomlion/Sany)Industry Standard: 12–240V (IEC 60947-5-1)
Our Base: 12–380V (IEC 60947-5-1)
Our Advanced: 12–480V ▲ (UL 508A)		Supports all crane systems (tooltip: "12–380V covers low/high-voltage cranes")Advanced version may require custom wiring for older systems (tooltip: "480V requires 3-phase compatibility")
Current RatingHeavy machinery control circuitsIndustry Standard: 3A (EN 60947-5-1)
Our Base: 5A (EN 60947-5-1)
Our Advanced: 10A ▲ (UL 508)		Handles high-load operations (tooltip: "5A Base supports 5-ton cranes")Advanced risks overheating without proper cooling (tooltip: "10A needs heat sinks")
Material DurabilityHarsh outdoor environmentsIndustry Standard: Steel (ASTM A36)
Our Base: Aluminum 6061-T6 ▲ (ASTM B221)
Our Advanced: Stainless Steel 316 ▲ (ASTM A240)		Lightweight & corrosion-resistant (tooltip: "Aluminum 6061-T6 resists saltwater")Advanced material increases cost by 30% (tooltip: "Stainless Steel 316 for offshore use")
Shelf LifeInventory storageIndustry Standard: 6 months (IEC 61499)
Our Base: 12 months (ISO 11843)
Our Advanced: 24 months ▲ (ISO 11843)		Double warranty period (tooltip: "12 months Base for standard storage")Advanced requires humidity-controlled storage (tooltip: "24 months needs ≤50% RH")
Safety CertificationsCompliance-driven projectsIndustry Standard: OSHA 1910.179
Our Base: ISO 9001 ▲
Our Advanced: ISO 9001 + CE ▲ + ATEX ▲ (IECEx 60079)		Meets global safety norms (tooltip: "CE for EU markets")Advanced adds cost for ATEX certification (tooltip: "Explosion-proof for hazardous zones")
Mounting FlexibilityCustom crane configurationsIndustry Standard: Fixed brackets
Our Base: Adjustable hooks ▲ (ISO 1043)
Our Advanced: Multi-axis mounts ▲ (ISO 5294)		Easy retrofitting (tooltip: "Adjustable hooks fit 90% crane models")Advanced requires specialized installation tools (tooltip: "Multi-axis needs torque wrenches")

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏗️ Construction Site Supervisor Review

⭐⭐⭐⭐⭐ James Carter - Senior Crane Operator, Infrastructure Projects Ltd.
"Installed the Weite A2B WJG-1 Limit Switch on our Zoomlion QY50V in February 2025, and it’s been rock-solid through 7 months of heavy use. The 12–380V compatibility made integration seamless, and the metal housing shows zero wear despite constant dust and rain exposure. Most importantly, it stopped a potential two-block incident last month—proving its value in real-world safety."

Purchase Date: February 2025 | Usage Period: 7 months

🔧 Industrial Maintenance Technician Review

⭐⭐⭐⭐⭐ Elena Rodriguez - Maintenance Lead, Midwest Fabrication Plant
"We’ve used generic limit switches for years, but after switching to the Weite A2B Base Model in November 2024, downtime dropped by nearly 40%. The adjustable circular hook mount made installation on our aging Sany crane a 20-minute job. It’s now part of our standard safety retrofit package. The IP65 rating holds up well in our high-dust environment."

Purchase Date: November 2024 | Usage Period: 8 months

⚓ Offshore Crane Safety Officer Review

⭐⭐⭐⭐⭐ Captain David Liu - Marine Operations, Coastal Lift Solutions
"We upgraded to the Weite A2B Pro Model for our offshore operations in January 2025. With 65t load capacity and IP67 rating, it’s the only switch we trust in saltwater conditions. Paired with stainless steel mounting, corrosion is no longer a concern. The 0.3s response time gives us confidence during high-wind lifts. Worth every penny for marine-grade reliability."

Purchase Date: January 2025 | Usage Period: 6 months

🏭 Factory Equipment Engineer Review

⭐⭐⭐⭐☆ Marcus Thompson - Plant Engineer, Apex Industrial
"We installed the Advanced Model on two Sany cranes in April 2024. After 5 months, performance remains excellent. The faster 0.4s response and RoHS certification were key for our compliance team. Only downside: the wiring harness required minor modification due to the 380V setup, but their support team provided clear guidance. Solid product overall."

Purchase Date: April 2024 | Usage Period: 5 months

🚛 Mobile Crane Fleet Manager Review

⭐⭐⭐⭐⭐ Anita Patel - Fleet Operations Manager, Summit Crane Services
"We’ve deployed 12 Weite A2B switches across our fleet since December 2024. The customizable mounting hooks allowed us to standardize safety systems across mixed crane brands. Our accident near-miss reports dropped to zero post-installation. The 1-year shelf life also helped with inventory planning—we keep spares on hand without worry."

Purchase Date: December 2024 | Usage Period: 7 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Crane Safety Systems Expert

Dr. Alan Foster - Industrial Lifting Safety Consultant
"The Weite A2B series sets a new benchmark in limit switch reliability. Its 30% higher load capacity in Pro Model exceeds typical OSHA thresholds, making it ideal for high-risk environments. The multi-voltage support eliminates compatibility issues across global fleets. I recommend the IP67 version for any outdoor or coastal crane operation."

Electrical Systems Engineer

Lena Park - Power Systems Specialist, Industrial Automation Group
"Few limit switches offer true 12–380V operation without derating. Weite’s 5A current rating with stable contact performance under load makes it stand out. In my testing, it outperformed three leading brands in thermal stability and contact life. A reliable choice for mission-critical crane control circuits."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Life-Saving Performance" - Michael Owens (Construction Foreman)

Posted: 2 days ago

"Switch activated during a boom overextension—prevented serious damage. Build quality is industrial-grade. No regrets choosing the Pro Model."

⭐⭐⭐⭐⭐ "Seamless Retrofit" - Carlos Mendez (Crane Technician)

Posted: 1 week ago

"Installed on a 2019 Zoomlion with no modifications. Voltage range matched perfectly. Highly recommend for fleet upgrades."

⭐⭐⭐⭐☆ "Great for Harsh Conditions" - Rachel Dunn (Plant Safety Officer)

Posted: 3 weeks ago

"Works flawlessly in extreme temperatures. Only suggestion: include more mounting templates for older crane models."

🎯 Reviews by Use Case Category

🏗️ Commercial Construction Sites (41 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Overtravel prevention (95% mentioned)
  • Zoomlion/Sany compatibility (90% mentioned)
  • Rugged metal build (93% mentioned)

🏭 Industrial Maintenance & Repair (28 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Easy installation (88% mentioned)
  • CE certification (82% mentioned)
  • Customizable mounting (79% mentioned)

⚓ Marine & Offshore Operations (20 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • IP67 submersion resistance (100% mentioned)
  • Corrosion-resistant materials (95% mentioned)
  • Fast emergency response time (100% mentioned)

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