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quality High Power Relay LR38F Type 3PDT 40A 50A 240VAC 12VDC Custom R&D Solutions factory
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quality High Power Relay LR38F Type 3PDT 40A 50A 240VAC 12VDC Custom R&D Solutions factory
quality High Power Relay LR38F Type 3PDT 40A 50A 240VAC 12VDC Custom R&D Solutions factory
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High Power Relay LR38F Type 3PDT 40A 50A 240VAC 12VDC Custom R&D Solutions

Product Summary

LR38F type high power 3PDT relay, 40A/50A 240VAC, 12VDC coil. Sturdy impact-resistant construction with 2 or 3 sets of contact conversion. Bolt or socket mounting with optional sealed enclosure. Our in-house R&D team goes beyond standard specs — we analyze your application, optimize the relay configuration for cost-performance balance, and can develop custom variants from the ground up including coil redesign, contact rating adjustment, and enclosure modification.

Product Custom Attributes

Relay Type:
High Power Multi-Pole Relay LR38F Type
Manufacturer:
Factory Direct With R&D Engineering
Contact Form:
3PDT 3Z (3 Form C) / DPDT 2Z (2 Form C)
Contact Rating:
40A / 50A 240VAC / 28VDC
Coil Voltage:
DC 12V / 24V / 48V / 110V (Customizable)
Coil Power:
2.5W Typical
Dielectric Strength:
2500VAC 50/60Hz 1min
Insulation Resistance:
1000MΩ Minimum At 500VDC
Operate Time:
30ms Maximum
Release Time:
20ms Maximum
Mechanical Life:
1 Million Operations Minimum
Electrical Life:
30,000 Operations At Rated Load
Operating Temperature:
-40°C To +70°C
Mounting Type:
Bolt Terminal / Socket Mount
Enclosure:
Standard / Sealed / Static Block (Selectable)
Construction:
Sturdy Impact-Resistant Frame
Contact Material:
AgCdO / AgSnO2 (Customizable)
R&D Services:
Custom Coil Design, Contact Optimization, Enclosure Engineering
Solution Services:
Application Analysis, Cost Optimization, BOM Reduction, Custom Development
Highlight:

High Power 3PDT Relay

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LR38F 40A 50A Sealed

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Custom R&D Solution Design

Design Now

Basic Properties

Place of Origin:
Zhejiang, China
Certification:
UL, CE, RoHS, ISO 9001:2015
Model Number:
LR38F

Trading Properties

Packaging Details:
Individual box, 20pcs per export carton
Delivery Time:
5-10 working days for stock, 15-25 days for production
Payment Terms:
T/T,L/C,PayPal
Supply Ability:
100000 Pieces per Month

Product Description

High Power Relay LR38F Type 3PDT 40A — R&D Driven, Cost Optimized

We Don't Just Manufacture — We Engineer Solutions That Reduce Your BOM Cost

⚡ 40A/50A 3PDT 🔩 Socket 🔒 Sealed Option 💡 R&D Custom Design

💡 R&D Team That Partners With Your Engineers

The LR38F is a rugged 3PDT high power relay for industrial multi-circuit switching. But the real value we bring is our R&D partnership. Our engineering team reviews your application — what loads are you switching? What is your duty cycle? What is your target BOM cost? — and proposes optimized configurations that may reduce component count, eliminate redundant parts, or improve reliability. We can redesign coil parameters, adjust contact ratings, modify enclosures, and create custom variants that fit your product architecture perfectly. We help you lower cost while improving performance.

Key Specifications

Parameter 3PDT (3Z) DPDT (2Z)
Contact Rating 40A 240VAC 50A 240VAC
Coil Voltage 12V / 24V / 48V / 110V DC
Mounting Bolt Terminal / Socket Mount
Enclosure Standard / Sealed / Static Block
Mechanical Life 1,000,000 Operations

🔬 R&D Customization

In-house engineering team redesigns coil specs, contact material, enclosure sealing, and terminal layout for your exact application requirements.

💰 Cost Optimization

We analyze your BOM and propose relay configurations that reduce cost — right-sizing contacts, optimizing coil power, eliminating unnecessary features.

🔄 Multi-Pole Flexibility

Standard 2-pole (DPDT) and 3-pole (3PDT) configurations. Custom pole arrangements available for special switching logic requirements.

📋 Solution Development

From application analysis to sample delivery — we manage the full development cycle including DFM review, certification testing, and production ramp-up.

Let Our R&D Team Optimize Your Relay Solution

Share your application requirements. We will analyze your switching needs and propose a cost-optimized configuration — not just a standard part number, but a tailored solution.

📧 Contact our R&D team → MOQ: 20pcs | Solution Design: 1-2 Weeks

Overall Rating
5.0
★★★★★
★★★★★
Based on 50 reviews recently
5 star
100%
4 star
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3 star
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All Reviews
  • L
    leonardo
    Canada Aug 14.2026
    ★★★★★
    ★★★★★
    Good quality relay and socket. The 10A rating works well in our control panel, and the flange mount design made installation easier.
  • K
    kelvin
    United States Jul 22.2026
    ★★★★★
    ★★★★★
    The EC5 connector fits snugly into my jump starter, and the clamps have a very strong grip. Easily handled starting my engine. Highly recommended!
  • K
    Kemal
    Mexico Jul 20.2026
    ★★★★★
    ★★★★★
    We partnered with them for a 10kWh home energy storage system, and the result was excellent. The stackable design, custom OEM support, and BOM optimization helped us launch a reliable product faster and within budget.

Contact Our Experts And Get A Free Consultation!

Our mission is to offer "High Quality" & "Good Service" & "Fast Delivery" to help our clients to gain more profits.