Siemens SIRIUS 3TG10 Power Relays and Miniature Contactors

Siemens SIRIUS 3TG10 Power Relays and Miniature Contactors Suppliers,Exporters in India

ARP IMPEX is a supplier and exporter of Siemens SIRIUS 3TG10 Power Relays and Miniature Contactors in India. We supply these compact switching devices for motor control panels, pumps, fans, air-conditioning equipment, heating systems, machinery and replacement requirements.

The Siemens 3TG10 sits between a normal control relay and a full-size motor contactor. It is small enough for compact control panels but has the switching capacity required for small motors and industrial loads.

The range is commonly used for motors up to 4 kW at 400 V under AC-3 duty. It can also switch resistive loads, heaters, lighting circuits and other electrical equipment, provided the connected load remains within the rating of the selected model.

Siemens supplies the 3TG10 with three main switching poles and either one normally open or one normally closed auxiliary contact. Different coil voltages and connection methods are available, so the complete article number must be checked before ordering.

The narrow 36 mm housing makes the 3TG10 useful where panel space is limited. It is often installed in air conditioners, small pumps, ventilation equipment, domestic appliances, office distribution boards and simple machine-control systems.

For Siemens 3TG10 Power Relay price and availability, send the complete part number, required quantity and destination country.

Siemens 3TG10 Product Versions

The Siemens 3TG10 range is mainly divided according to the auxiliary contact arrangement, coil voltage and terminal type.

Siemens 3TG1010 Power Relays with 1 NO Auxiliary Contact

The Siemens 3TG1010 models have three main poles and one normally open auxiliary contact.

The auxiliary contact closes when the coil is energised. It can be used for:

• Contactor holding circuits
• Running indication
• PLC feedback
• Interlocking
• Alarm signalling
• Switching an additional control circuit

Common 3TG1010 models include versions with 24 V AC, 24 V DC, 110 V AC and 230 V AC coils. The exact available voltage depends on the complete Siemens part number.

Examples of article-number families include:

• Siemens 3TG1010-0AC2
• Siemens 3TG1010-0BB4
• Siemens 3TG1010-0AG2
• Siemens 3TG1010-0AL2
• Siemens 3TG1010-1AC2
• Siemens 3TG1010-1BB4
• Siemens 3TG1010-1AG2
• Siemens 3TG1010-1AL2

The code ending and suffix must be checked carefully because they identify the coil voltage, terminal arrangement and packaging version.

Siemens 3TG1001 Power Relays with 1 NC Auxiliary Contact

The Siemens 3TG1001 models have three main switching poles and one normally closed auxiliary contact.

The normally closed contact opens when the coil is energised. It is often used for:

• Electrical interlocking
• Stop or trip indication
• Status monitoring
• Preventing simultaneous operation of two contactors
• Control-circuit feedback
• Alarm or warning circuits

Common article-number families include:

• Siemens 3TG1001-0AC2
• Siemens 3TG1001-0BB4
• Siemens 3TG1001-0AG2
• Siemens 3TG1001-0AL2
• Siemens 3TG1001-1AC2
• Siemens 3TG1001-1BB4
• Siemens 3TG1001-1AG2
• Siemens 3TG1001-1AL2

The complete number should always be copied from the existing relay label or project bill of materials.

Siemens 3TG10 with Screw Terminals

Models with screw terminals suit normal industrial panel wiring.

They provide:

• Secure conductor termination
• Easy installation with standard control-panel tools
• Finger-safe construction on applicable models
• Practical replacement in existing control panels
• Suitable connection for flexible or solid conductors

For many Siemens 3TG10 article numbers, the “0” in the relevant part of the model code identifies the screw-terminal version.

Siemens 3TG10 with Flat Connectors

Siemens also supplies 3TG10 models with 6.3 × 0.8 mm flat connectors.

These versions are often used in:

• Household appliances
• HVAC equipment
• Original equipment manufacturing
• Pre-wired machine assemblies
• High-volume production
• Equipment with plug-on wiring harnesses

Flat connectors can reduce assembly time where the equipment manufacturer uses prepared push-on terminals.

For many models, the “1” in the relevant part of the article number identifies the flat-connector version. The exact code should still be verified from Siemens data before selection.

Technical Specifications

• Brand: Siemens
• Product range: SIRIUS
• Series: 3TG10
• Product type: Power relay and miniature contactor
• Main configurations: 3 main poles with 1 NO or 1 NC auxiliary contact
• Rated motor duty: Up to 4 kW at 400 V under AC-3 duty
• Rated AC-3 operational current: Approximately 8.4 A
• AC-1 operational current: Up to 20 A with screw terminals
• AC-1 operational current with flat connectors: Up to 16 A
• Rated insulation voltage: 400 V
• Rated impulse withstand voltage: 4 kV
• Width: 36 mm
• Approximate dimensions: 36 × 56 × 56 mm
• Terminal options: Screw terminals or 6.3 × 0.8 mm flat connectors
• Coil operation: AC or DC, depending on article number
• Common coil voltages: 24 V AC, 24 V DC, 110 V AC and 230 V AC
• AC coil frequency: 45–450 Hz on applicable models
• Mechanical endurance: Up to approximately 3 million operating cycles
• Electrical endurance under AC-3 duty: Up to approximately 400,000 operating cycles
• Permissible operating temperature: Approximately -25°C to +55°C
• Mounting: Standard control-panel or equipment mounting
• Surge protection: Integrated protective circuit against switching overvoltage
• Standards: IEC 60947-1, IEC 60947-4-1 and IEC 60947-5-1
• Product status: Active Siemens product family

These are general family specifications. The actual coil voltage, contact arrangement, operational current and connection type must be verified from the complete Siemens 3TG10 article number.

Features

• Compact 36 mm construction
• Suitable for small motors up to 4 kW at 400 V
• Available with one NO or one NC auxiliary contact
• Three main poles for switching three-phase loads
• AC and DC coil versions are available
• Common industrial coil voltages are covered
• Screw-terminal versions suit normal control-panel wiring
• Flat-connector versions support faster equipment assembly
• Integrated circuit helps control switching overvoltage
• Hum-free operation makes it suitable for noise-sensitive locations
• Can be used as a power relay or miniature motor contactor
• Suitable for motor and resistive-load switching
• Compact design reduces control-panel space
• Useful for original equipment and replacement work
• Handles more load than a normal control relay
• Smaller than many standard industrial contactors
• Suitable for simple electrical control systems
• Different voltage and terminal combinations are available
• Active Siemens product range with multiple article numbers
• Suitable for industrial and commercial equipment

Compact Motor Switching

A normal interface relay is generally used for signal transfer and light control loads. It may not have the contact construction or switching rating required to start a three-phase motor.

The Siemens 3TG10 can switch three-phase motors up to 4 kW at 400 V under AC-3 duty. This makes it suitable for smaller pumps, fans, compressors and machine drives where a large motor contactor would take up unnecessary space.

The motor current must still be checked against the 3TG10 rating. Motor power alone is not enough for final selection because the actual current can change according to voltage, efficiency, starting method and operating conditions.

A suitable short-circuit protection device and motor overload relay should be used where required. The 3TG10 switches the motor circuit but does not replace overload or short-circuit protection.

Hum-Free Operation

Conventional AC-operated contactors may produce a humming sound from the magnetic system. This can be noticeable in offices, residential buildings, appliance panels and HVAC equipment installed close to occupied areas.

The Siemens 3TG10 is designed for hum-free operation. It is therefore commonly selected for:

• Air-conditioning equipment
• Heating control
• Domestic appliances
• Office distribution boards
• Residential electrical panels
• Ventilation equipment
• Equipment installed in noise-sensitive locations

Hum-free operation can also help identify abnormal contactor noise during maintenance, as the device should not normally produce the continuous magnetic hum associated with some traditional contactors.

Integrated Protection Against Switching Overvoltage

When a contactor or relay coil is switched off, the collapsing magnetic field can produce a voltage peak. This may cause interference or place additional stress on the connected control equipment.

The Siemens 3TG10 includes an integrated protective circuit against opening or switching overvoltage.

This can reduce the need for a separately installed surge suppressor in normal applications and helps protect PLC outputs, control contacts and other connected components.

The protection built into the 3TG10 does not remove the need to follow the approved wiring and protection requirements of the complete machine or panel.

Applications

Siemens SIRIUS 3TG10 Power Relays and Miniature Contactors are used for:

• Small three-phase motors
• Pump control panels
• Fan and blower control
• Air-conditioning equipment
• HVAC control systems
• Heating systems
• Ventilation equipment
• Small compressors
• Refrigeration equipment
• Domestic appliances
• Office distribution boards
• Residential electrical panels
• Industrial control panels
• Machine automation
• Conveyor systems
• Packaging machinery
• Material-handling equipment
• Small machine tools
• Water-treatment equipment
• Irrigation pumps
• Boiler and heater controls
• Resistive heating loads
• Lighting control circuits
• Original equipment manufacturing
• Electrical appliance manufacturing
• Compact motor starter assemblies
• Replacement of existing Siemens 3TG10 relays

The 3TG10 is particularly useful where the available installation space is limited, but the application needs more switching capacity than a normal control relay can provide.

Use in Pumps, Fans and HVAC Systems

Pumps, fans and air-conditioning units often use motors within the operating range of the Siemens 3TG10.

A typical control circuit may use the 3TG10 to switch the motor after receiving a signal from:

• A thermostat
• A pressure switch
• A level switch
• A PLC
• A timer
• A temperature controller
• A building management system

The auxiliary contact can provide motor-running feedback, interlocking or indication.

For continuous motor operation, the motor full-load current, starting frequency and ambient temperature must be checked before selecting the contactor.

Use for Resistive Loads and Heaters

The Siemens 3TG10 can also switch resistive loads under AC-1 duty.

Applications may include:

• Electric heaters
• Heating elements
• Industrial ovens
• Small furnaces
• Lighting banks
• Resistive appliance loads
• Control-panel heating

The AC-1 current rating differs according to whether the device uses screw terminals or flat connectors. The selected conductor size, terminal temperature and enclosure conditions should also be considered.

A relay selected for a 20 A resistive load should not automatically be used for a 20 A motor load. Motor switching comes under a different utilisation category and creates higher stress during starting.

Siemens 3TG10 Power Relay and Standard Control Relay Difference

A standard control relay is usually selected for signal switching, interlocking and low-power control circuits.

The Siemens 3TG10 is designed to handle higher electrical loads and can directly switch small three-phase motors.

The main difference is:

• Standard control relay: Used mainly for control signals and smaller loads
• Siemens 3TG10 power relay: Used for small motors and higher-current electrical loads
• Standard motor contactor: Used for larger motors and applications requiring a broader accessory range

The correct product depends on the load current, motor power, switching frequency and required auxiliary contacts.

Siemens 3TG10 and SIRIUS 3RT Contactor Difference

Both products can switch motors, but they cover different requirements.

The Siemens 3TG10 is suitable for compact applications and motors up to approximately 4 kW at 400 V. It has a narrow housing and a fixed basic contact arrangement.

The Siemens SIRIUS 3RT contactor range covers a much wider motor-power range and offers more accessories, auxiliary contact blocks, interlocks and motor-starter combinations.

The 3TG10 may be the better choice when:

• The motor is within the 3TG10 rating
• Panel space is limited
• Only one auxiliary contact is required
• The equipment needs screw or flat connections
• A compact and quiet switching device is preferred

A SIRIUS 3RT contactor may be more suitable for larger motors, frequent switching, reversing starters or applications requiring additional auxiliary contacts and accessories.

Selecting the Correct Siemens 3TG10 Power Relay

A request for “Siemens 3TG10 Relay” does not identify the complete product.

For an accurate quotation, provide:

• Complete Siemens article number
• Required quantity
• Destination country
• Coil voltage
• AC or DC coil requirement
• One NO or one NC auxiliary contact
• Screw-terminal or flat-connector version
• Motor power and operating voltage
• Full-load current
• Type of load being switched

For replacement enquiries, send a clear photograph of the existing Siemens label and terminal arrangement.

The most important points are the complete part number and coil voltage. A 24 V DC model cannot be replaced with a 24 V AC model simply because both show “24 V” on the label.

The normally open and normally closed auxiliary contact arrangements must also match the existing control circuit.

Siemens 3TG10 Replacement Requirements

When replacing an existing Siemens 3TG10 Power Relay, check:

• Existing part number
• Coil voltage and frequency
• AC or DC operation
• Auxiliary contact arrangement
• Screw or flat terminals
• Motor or load current
• Panel mounting space
• Existing wire or connector arrangement
• Required quantity

A similar-looking 3TG10 model may have a different coil or auxiliary contact. Installing the wrong version can prevent the machine from operating correctly or change the interlocking sequence.

For old equipment where the label is damaged, photographs of the relay, wiring and machine nameplate can help identify the required model.

Siemens SIRIUS 3TG10 Power Relay Supplier and Exporter in India

ARP IMPEX supplies Siemens SIRIUS 3TG10 Power Relays and Miniature Contactors for panel builders, machine manufacturers, appliance manufacturers, HVAC companies, industrial plants, maintenance contractors and export buyers.

We handle enquiries for Siemens 3TG1010 power relays with 1 NO auxiliary contact, Siemens 3TG1001 relays with 1 NC auxiliary contact, 24 V AC/DC coils, 110 V AC coils, 230 V AC coils, screw-terminal models and flat-connector versions.

Buyers looking for a Siemens 3TG10 4 kW miniature contactor, Siemens 3TG1010 price in India, Siemens 3TG1001 replacement relay or Siemens 3TG10 exporter from India can send the exact article number for quotation.

The Siemens 3TG10 price depends on the complete model, coil voltage, auxiliary contact arrangement, terminal type, quantity and delivery destination.

Send the complete Siemens part number, required quantity and destination country for price, availability and export quotation.