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Home Product Siemens SIMATIC 6ES5105-3RB31 Redundant PROFIBUS DP Interface Module
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Siemens SIMATIC 6ES5105-3RB31 Redundant PROFIBUS DP Interface Module

SIMATIC Relay Module
3RB31 Motor Protector
Siemens 6ES5105
6ES5105-3RB31
SIMATIC Relay Module 6ES5105-3RB31 Motor Protector by Siemens delivers compact motor circuit protection with integrated overload monitoring. Features adjustable current settings, fault signaling, and modular design for seamless integration in SIMATIC control systems. Ensures safe motor operation in industrial automation applications.
Categories:Automation
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Product Description

The Siemens SIMATIC Relay Module 6ES5105-3RB31 is a compact 3RB31 Motor Protector designed for industrial motor control systems. It integrates 3 main contacts (NO) and 1 auxiliary contact (1NO+1NC), enabling direct motor overload and short-circuit protection. Compatible with up to 4 expansion modules, it supports seamless scaling in control cabinets. Operating at 24-690V AC/DC with a robust temperature range of -25°C to +60°C, it excels in manufacturing, HVAC, and heavy machinery sectors. Key advantages include DIN-rail mounting, manual reset option, and high breaking capacity up to 1000A. Lacking built-in communication interfaces, it relies on conventional wiring for system integration. Its thermal-magnetic tripping mechanism ensures precise current sensing (0.1-40A adjustable), while the compact 45mm width optimizes panel space. Requires external monitoring for advanced diagnostics due to absence of display or remote configuration capabilities.
Parameter Specification
Product Series SIMATIC Relay Module
Device Type 3RB31 Motor Protector
Manufacturer Model Siemens 6ES5105-3RB31
Rated Current Range 0.1 A - 5.5 A
Control Voltage 24 V DC / 230 V AC
Contact Configuration 3NO + 1NC
Protection Degree IP20
Certification CE, UL, cULus
Operating Temperature -25°C to +55°C
Mounting Type DIN Rail (35 mm)
Dimensions (WxHxD) 22.5 x 90 x 100 mm
Weight 0.2 kg
question:Why is there a handling fee?
answer:Our handling fee covers secure payment processing, documentation, and administrative costs to ensure efficient order fulfillment.
question:Are there cheaper shipping options available?
answer:We offer flexible logistics solutions. Contact us to explore cost-effective shipping methods tailored to your needs.
question:Why should we purchase from your company?
answer:As Asia's leading industrial automation supplier with 20+ years of expertise, 85% of our clients are repeat buyers due to quality and reliability.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why is there a handling fee?
answer:Our handling fee covers secure payment processing, documentation, and administrative costs to ensure efficient order fulfillment.
question:Are there cheaper shipping options available?
answer:We offer flexible logistics solutions. Contact us to explore cost-effective shipping methods tailored to your needs.
question:Why should we purchase from your company?
answer:As Asia's leading industrial automation supplier with 20+ years of expertise, 85% of our clients are repeat buyers due to quality and reliability.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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