Product Description

Siemens 3RB3016-1TB0 Electronic Overload Relay – 4–16 A, Class 10E

The Siemens 3RB3016-1TB0 is a microprocessor-based electronic overload relay from the Siemens SIRIUS 3RB3 series, designed for reliable motor protection against overload, phase failure and phase asymmetry. The exact model provides an adjustable current range of 4 to 16 A, a Class 10E trip characteristic, Size S00 construction and contactor mounting. Siemens specifies screw terminals for both the main and auxiliary circuits, with manual-automatic reset.

Siemens SIRIUS 3RB3 Electronic Overload Relay

The 3RB3016-1TB0 is designed for electronic protection of motors in industrial electrical installations. Its solid-state electronic design monitors motor current and provides an inverse-time overload response according to the Class 10E characteristic.

The compact S00 contactor-mounted construction allows the relay to be used with compatible Siemens SIRIUS contactors in motor-starter assemblies.

Typical applications include:

• Industrial motor protection

• Pumps

• Fans and blowers

• Compressors

• Conveyors

• Machine tools

• Production equipment

• Process machinery

• Motor starters

• Industrial electrical panels

Adjustable 4–16 A Current Range

The 3RB3016-1TB0 has an adjustable current-response range of 4 to 16 A, with a rated operational current of 16 A. Siemens also specifies a 50–60 Hz operating frequency and maximum rated operating voltage of 690 V.

The current setting should be adjusted according to the motor nameplate current and the requirements of the complete motor-protection system.

Siemens specifies guide motor-power ranges of approximately 2.2–7.5 kW at 400 V, 2.2–7.5 kW at 500 V, and 3–11 kW at 690 V, depending on the actual motor and application conditions.

Class 10E Trip Characteristic

The exact 3RB3016-1TB0 is a Class 10E electronic overload relay. Siemens' current datasheet explicitly identifies the trip class as CLASS 10E.

Class 10E provides a defined overload tripping characteristic for motors with corresponding starting requirements. The selected trip class should be matched to the motor starting time and actual operating conditions.

Electronic Overload Protection

The main function of the 3RB3016-1TB0 is electronic motor-overload protection.

The relay monitors motor current and responds when the configured overload characteristic is exceeded.

This helps protect compatible motors against:

• Prolonged overcurrent

• Excessive mechanical loading

• Motor overheating caused by overload

• Abnormal operating conditions

• Excessive motor starting duration

Correct adjustment of the current setting is essential for dependable motor protection.

Phase-Failure and Asymmetry Protection

The Siemens 3RB30 electronic overload relay family provides overload, phase-failure and asymmetry protection. These functions help protect three-phase motors against abnormal current conditions that can result in additional heating and electrical stress.

This makes the relay suitable for industrial motor applications where protection against phase-related operating conditions is required.

1 NO + 1 NC Auxiliary Contacts

The 3RB3016-1TB0 has integrated auxiliary contacts consisting of 1 normally closed (NC) and 1 normally open (NO) contact. Siemens specifies the NC contact for contactor disconnection and the NO contact for the “tripped” indication.

These contacts can be used for:

• Contactor control

• Trip indication

• Panel feedback

• Alarm signalling

• Motor fault indication

• Electrical interlocking

The auxiliary contacts provide a practical interface between the overload relay and the motor-control circuit.

Contactor Mounting

The 3RB3016-1TB0 is designed for contactor mounting and belongs to Size S00. Siemens specifies S00 as both the overload-relay size and compatible contactor size.

This allows the relay to be combined with a suitable Siemens SIRIUS contactor to create a compact motor-starter assembly.

Screw-Terminal Connections

The 3RB3016-1TB0 uses screw-type terminals for the main and auxiliary/control circuits. Siemens also specifies a removable terminal for the auxiliary and control circuit.

This provides a conventional and practical wiring method for industrial electrical panels and maintenance applications.

Manual and Automatic Reset

The exact 3RB3016-1TB0 supports manual and automatic RESET. Siemens specifies the device with a manual-automatic reset configuration.

The typical recovery time after an overload trip is approximately 3 minutes with automatic reset, while manual and remote reset recovery can be 0 minutes under the specified conditions.

The appropriate reset method should be selected according to the motor-control requirements and operating conditions.

TEST Function and Self-Monitoring

The Siemens 3RB3 electronic overload relay family includes diagnostic and maintenance functions such as TEST functionality, switch-position indication and self-monitoring.

These features can support:

• Commissioning

• Functional testing

• Troubleshooting

• Preventive maintenance

• Panel servicing

Electrical and Environmental Characteristics

The 3RB3016-1TB0 has:

• 690 V insulation voltage

• 6 kV surge-voltage resistance

• Approximately 1.1 W total power loss at rated current in the hot operating state

• Approximately 0.37 W power loss per pole

• 50–60 Hz operating frequency

• -25 °C to +60 °C operating ambient temperature range

• Installation altitude up to 2,000 m under specified conditions

These specifications should be considered during electrical-panel design and installation.

Compact S00 Design

The 3RB3016-1TB0 uses a compact S00 housing with approximate dimensions of:

• Height: 79 mm

• Width: 45 mm

• Depth: 73 mm

The compact housing helps integrate the overload relay into motor starters and electrical panels where panel space is important.

Industrial Motor Applications

Pumps

The relay can protect compatible pump motors against overload, phase failure and asymmetry.

Fans and Blowers

The Class 10E characteristic can be used for motors with suitable starting requirements.

Compressors

Electronic overload protection can help protect compatible compressor motors from excessive operating current.

Conveyors

The relay can be incorporated into suitable conveyor motor-starter assemblies.

Machine Tools

The compact S00 construction is suitable for machine-control panels and motor starters.

Production Equipment

The relay can be used for motor-protection requirements in manufacturing and production equipment.

Suitable for OEMs, Panel Builders and Electrical Dealers

The 3RB3016-1TB0 is suitable for OEM equipment manufacturers, electrical panel builders, industrial maintenance teams, industrial buyers and electrical product dealers.

For SB Smart, the product is best positioned around industrial electrical product supply, dealer/distributor procurement and replacement sourcing, without claiming automation integration or automation-service work.

SB Smart supplies Siemens industrial electrical components for procurement requirements across Faridabad, Delhi NCR, Gurgaon/Gurugram, Noida, Haryana, Punjab, Mumbai and other major Indian cities.

Key Features

• Siemens SIRIUS 3RB3 electronic overload relay

• Article number 3RB3016-1TB0

• Microprocessor-based electronic overload protection

• 4–16 A adjustable current range

• Class 10E

• Size S00

• Contactor mounting

• Screw terminals for main and auxiliary circuits

• Removable auxiliary/control terminal

• 1 NO + 1 NC auxiliary contacts

• Overload protection

• Phase-failure protection

• Asymmetry protection

• Manual RESET

• Automatic RESET

• TEST function

• Self-monitoring

• Switch-position indication

• 690 V insulation voltage

• 6 kV surge-voltage resistance

Benefits

• 4–16 A adjustable range: Suitable for a broad range of compatible industrial motors.

• Class 10E: Provides a defined overload characteristic for suitable motor-starting requirements.

• Electronic protection: Provides continuous motor-current monitoring.

• Phase protection: Helps protect against phase failure and asymmetry.

• 1 NO + 1 NC contacts: Provides useful control, signalling and trip-feedback functions.

• Contactor mounting: Supports compact S00 motor-starter assemblies.

• Screw terminals: Provides a familiar industrial wiring solution.

• Manual/automatic reset: Supports different motor-control requirements.

• TEST and self-monitoring: Assist commissioning and maintenance.

• Compact S00 design: Helps optimize control-panel space.

Why Choose Siemens 3RB3016-1TB0?

The Siemens 3RB3016-1TB0 is a compact electronic overload relay for motor protection in the 4–16 A range with a Class 10E trip characteristic.

Its combination of electronic overload protection, phase-failure and asymmetry protection, S00 contactor mounting, 1 NO + 1 NC auxiliary contacts, screw connections and manual/automatic reset makes it suitable for industrial motor starters, electrical panels, OEM equipment and replacement requirements.

For SB Smart, this product should be positioned around Siemens industrial electrical product supply and procurement, making it relevant for industrial buyers, panel builders, maintenance teams and electrical product dealers across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major cities across India.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 3RB3016-1TB0?

It is a Siemens SIRIUS 3RB3 electronic overload relay for motor protection with a 4–16 A adjustable current range and Class 10E characteristic.

2. What is the current setting range?

The adjustable current range is 4–16 A.

3. What is the trip class?

The exact 3RB3016-1TB0 is Class 10E.

4. Does it provide phase-failure protection?

Yes. Siemens specifies phase-failure and asymmetry protection for the 3RB3 electronic overload relay family.

5. How many auxiliary contacts does it have?

It provides 1 NO + 1 NC auxiliary contacts. The NC contact is for contactor disconnection and the NO contact is for the “tripped” indication.

6. Is it contactor-mounted?

Yes. The 3RB3016-1TB0 is designed for S00 contactor mounting.

7. Does it use screw terminals?

Yes. Siemens specifies screw-type terminals for both the main and auxiliary/control circuits.

8. What reset options are available?

It supports manual and automatic RESET.

9. What are its dimensions?

The approximate dimensions are 79 mm height × 45 mm width × 73 mm depth.

10. Where can I buy Siemens 3RB3016-1TB0 in India?

SB Smart supplies Siemens industrial electrical products in India, including SIRIUS electronic overload relays and related motor-protection components for industrial buyers, panel builders, maintenance requirements and product procurement.