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quality Custom Intermediate Relay Solution LL3C-L 10A 3PDT PCB Socket Flange Mount Design Support for Industrial Automation factory
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quality Custom Intermediate Relay Solution LL3C-L 10A 3PDT PCB Socket Flange Mount Design Support for Industrial Automation factory
quality Custom Intermediate Relay Solution LL3C-L 10A 3PDT PCB Socket Flange Mount Design Support for Industrial Automation factory
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Custom Intermediate Relay Solution LL3C-L 10A 3PDT PCB Socket Flange Mount Design Support for Industrial Automation

Product Summary

Custom LL3C-L 10A 3PDT intermediate relay solution with PCB socket and flange mount design support for industrial automation. We provide relay selection, engineering optimization, and customized solutions to improve reliability, performance, and cost efficiency for control system

Product Custom Attributes

Features:
Ultra Small Size, Light Weight, High Sensitivity, Long Service Life
Model:
LL3C-L (ROC Series)
Contact Configuration:
3PDT (3 Pole Double Throw)
Contact Rating:
10A At 250VAC / 28VDC
Coil Voltage:
5V, 12V, 24V, 48V, 110V, 220V DC/AC (Custom)
Mounting Type:
PCB, Socket, Flange Mount
Options:
Indicator Light, Freewheeling Diode, Surge Suppression
Mechanical Life:
10,000,000 Operations Min
Electrical Life:
100,000 Operations At Rated Load
Operating Temperature:
-40°C To +70°C
Application:
Industrial Automation, PLC Interface, Motor Control, Signal Isolation, Power Distribution
Customization Service:
Coil Voltage, Contact Material, Pin Layout, Terminal Type, Label Printing, Performance Optimization, Cost Reduction Engineering
Highlight:

Custom Intermediate Relay Design Service

,

10A 3PDT PCB Socket Relay Solution

,

Industrial Automation Control Relay OEM

Design Now

Basic Properties

Place of Origin:
Guangdong, China
Brand Name:
Rocfly
Certification:
ISO 9001:2015, CE, RoHS, UL Recognized
Model Number:
LL3C-L-10A

Trading Properties

Packaging Details:
Anti-static tray, individual carton, export-grade corrugated master carton, custom labeling available
Delivery Time:
5-7 working days for samples, 15-25 days for mass production
Payment Terms:
T/T,L/C,PayPal
Supply Ability:
200000 Pieces per Month

Product Description

Custom Intermediate Relay Solution — LL3C-L Series

We do more than supply relays. We engineer relay solutions around your application requirements — custom coil voltage, tailored contact configuration, optimized mounting interface, and integrated protection features. From component selection to system-level optimization, our engineering team partners with you to improve both performance and cost efficiency.

LL3C-L Base Specifications

ParameterSpecification
ModelLL3C-L (ROC Series)
Contact Configuration3PDT — 3 sets of changeover contacts
Contact Rating10A at 250VAC / 28VDC
Coil Voltage Options5V, 12V, 24V, 48V, 110V, 220V DC/AC — Custom voltages available
Mounting TypePCB layout, DIN socket, flange mount — user-selectable
Key FeaturesUltra-small footprint, lightweight, high sensitivity, long mechanical life
Optional Add-onsLED indicator, freewheeling diode, surge suppression
Mechanical / Electrical Life10M / 100K operations (rated load)

Beyond Standard Relay Supply

  • Custom Relay Design — We tailor coil voltage, contact material (AgCdO, AgSnO2, AgNi), terminal type, pin layout, and packaging to your exact specification. Not a single parameter is off-limits. Custom silk-screen labeling and OEM branding supported.
  • Solution-Level Engineering — Our applications team works with your R&D to integrate the relay into your product — PCB footprint optimization, coil drive circuit review, surge protection strategy, and thermal derating analysis. We deliver a validated relay subsystem, not just a component.
  • Performance Optimization — Contact material upgrade for higher inrush current, sealed construction for harsh environments, gold-flash contacts for low-level signal switching. We identify the right configuration to extend relay life and improve reliability in your specific use case.
  • Cost Optimization — Alternative pin-compatible designs, domestic coil substitution, value-engineered contact material, and volume-based connector/terminal consolidation. Our procurement and engineering teams collaborate to reduce BOM cost without compromising performance.

Typical Applications

ApplicationRelay Function
PLC / Industrial ControllerInterface between low-power control signals and high-power output devices
Motor Control PanelStart/stop logic, forward/reverse interlocking, overload protection signal
Signal IsolationGalvanic isolation between control and power circuits, noise suppression
Power DistributionMulti-circuit switching, load shedding, redundant power path selection
HVAC / Building AutomationCompressor, fan, and heater control with auxiliary status feedback

Whether you need a drop-in replacement with a custom coil voltage or a complete relay subsystem validated for your industrial product — we deliver engineering, not just components. Contact us with your relay requirements for a technical proposal within 48 hours.

Overall Rating
5.0
★★★★★
★★★★★
Based on 50 reviews recently
5 star
100%
4 star
0
3 star
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2 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.

Contact Our Experts And Get A Free Consultation!

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