New Original Siemens 3RU6116-1CB1 Thermal Overload Relay
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New Original Siemens 3RU6116-1CB1 SIRIUS Thermal Overload Relay Full English Introduction
1. Product Overview
The 3RU6116-1CB1 is a brand-new original thermal overload relay from Siemens SIRIUS 3RU6 series, designed for overload and phase failure protection of three-phase asynchronous motors. It adopts bimetallic strip thermal induction principle and is specially matched with SIRIUS 3RT series power contactors via direct plug-in assembly without extra wiring terminals. This model features adjustable current setting range from 1.8 A to 2.5 A, with a built-in 1 normally open and 1 normally closed changeover contact for fault signal output and circuit interlock.
The relay provides dual protection against motor long-term overload and three-phase phase loss faults, widely used in small pump motors, fan motors, conveyor drive motors, textile machine drives and packaging automation equipment. It meets IEC 60947-4-1, VDE 0660 standards, carries CE and RoHS certifications, and supports long-term stable operation in normal industrial workshop environments. The integrated compact structure simplifies cabinet wiring and reduces assembly time for complete machine manufacturers.
2. Main Core Functions
- Thermal overload protection via bimetallic thermal deformation, automatically cutting control circuit when motor overloaded for a long time
- Phase failure detection function, quickly trips to protect motor once any phase power supply is lost
- Continuous adjustable rated current dial, flexible matching with different small-power motor rated currents
- Dual reset modes: manual reset as default, switchable to automatic reset via internal sliding switch
- 1 SPDT auxiliary contact (1NO + 1NC) for fault alarm signal transmission and contactor interlock control
- Built-in test button for on-site manual function inspection without actual motor load operation
- Trip stop indicator window to visually display overload tripping state for fast maintenance judgment
- Direct plug-in mounting compatible with corresponding 3RT series contactors, eliminating separate DIN rail installation
- Temperature compensation design to avoid false tripping caused by ambient cabinet temperature change
- Finger-safe IP20 housing to prevent accidental electric shock during cabinet maintenance
3. Core Electrical Technical Specifications
Table 1 Main Technical Parameters of 3RU6116-1CB1
表格
| Parameter Item | Technical Specification |
|---|---|
| Model Number | 3RU6116-1CB1 |
| Product Series | SIRIUS 3RU6 Thermal Overload Relay |
| Rated Current Adjustment Range | 1.8 A ~ 2.5 A |
| Protection Mechanism | Bimetallic thermal overload + phase loss protection |
| Reset Mode | Manual reset (switchable to automatic reset) |
| Auxiliary Contact Configuration | 1NO + 1NC changeover contact |
| Auxiliary Contact Rated Load | AC-15, 3 A at 230 V AC |
| Matching Contactor Series | SIRIUS 3RT20 frame small contactors |
| Rated Insulation Voltage | 690 V |
| Protection Grade | IP20 (front housing) |
| Operating Ambient Temperature | -20 ℃ ~ +60 ℃ |
| Mechanical Service Life | 10,000 operating cycles |
| Compliance Standards | IEC 60947-4-1, VDE 0660, CE, RoHS |
| Mounting Method | Direct plug-in assembly with matched contactors |
4. Product Dimension & Weight Data
Table 2 Dimension and Weight Information
表格
| Item | Exact Data |
|---|---|
| Overall Width | 45 mm |
| Overall Height | 98 mm |
| Overall Depth | 86 mm |
| Single Unit Net Weight | 0.11 kg |
| Single Original Packaging Gross Weight | 0.15 kg |
| Terminal Type | Plug-in conductive terminal for contactor matching |
| Installation Orientation | Horizontal mounting together with matched contactor |
5. Key Technical Features
- Integrated temperature compensation bimetallic strip, effectively avoid false tripping under high cabinet internal temperature
- Wide adjustable current dial, compatible with multiple small-power motors to reduce spare part model types
- Dual optional reset modes, applicable to automatic production lines and manually operated equipment separately
- Visible mechanical trip indicator window, maintenance staff can quickly confirm overload fault without measuring tools
- Plug-and-play assembly structure with 3RT series contactors, greatly reduce wiring workload and wiring error risks
- Compact slim housing, saves internal space of compact control cabinets for small automation equipment
- High precision thermal response curve, provides accurate delayed protection against mild long-term overload without motor burnout
- Anti-aging flame retardant plastic housing, dust-proof and durable for long-term industrial workshop use
- Independent phase loss detection loop, sensitive response to single-phase power loss to prevent motor winding burning
- Standard unified SIRIUS series appearance and installation size, convenient unified spare parts stock management
6. Ten Similar Functional Siemens SIRIUS Thermal Overload Relay Models
All listed products are original Siemens 3RU series thermal overload relays with overload and phase loss protection, pluggable with SIRIUS 3RT contactors, covering different current adjustment ranges for various motor power matching:
- 3RU6116-0CB1
- 3RU6116-1FB1
- 3RU6126-1CB1
- 3RU6106-1CB1
- 3RU6116-1DB1
- 3RU6136-1CB1
- 3RU6116-1HB1
- 3RU6146-1CB1
- 3RU6116-1KB1
- 3RU6156-1CB1
WHO WE ARE
Sobre nosotros
Located in Kunshan, China, Atifts Technology Co., Ltd. is a well-known enterprise specializing in electronic components distribution. We specialize in the sales of global brands of industrial automation components, with a wealth of experience in foreign product agents, and many of the world's leading manufacturers such as Keens, Schneider, SMC, ABB, Siemens, and other world-renowned manufacturers to establish a long-term and stable relations of cooperation.
Atifts Technology Co., Ltd. @ 2024
Over the years, we have always adhered to the "pioneering, pragmatic, standardized, innovative" management philosophy, and constantly promote the close integration of products and market demand. We firmly believe that only by constantly exploring new market areas, doing a good job in every detail, standardizing business processes, and continuously innovating products and services can we ensure that our products are more adaptable to market changes and meet the diversified needs of our customers.
Since the founding of the company, we have always adhered to the core concept of "survival by quality", and are committed to providing customers with high-quality electronic components. At the same time, we take specialized R & D manufacturing as the goal, market-oriented development strategy to ensure that our products are always in the forefront of the industry.
With excellent product quality, professional technical service and good market reputation, Kunshan Autofits Technology Co.,Ltd. has won the trust and support of our customers. We look forward to working with more partners hand in hand, to achieve long-term win-win relationship, and jointly promote the prosperity of the electronic components industry.
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