Product Description

Siemens 3RB3016-1PB0 Electronic Overload Relay – 1–4 A, Class 10E

The Siemens 3RB3016-1PB0 is a microprocessor-based electronic overload relay from the Siemens SIRIUS 3RB3 series, designed for motor protection against overload, phase failure and asymmetry. The exact Siemens datasheet specifies an adjustable current range of 1 to 4 A, Class 10E, Size S00, contactor mounting, screw terminals for the main and auxiliary circuits, and manual-automatic reset.

The compact relay is suitable for low-current motor protection in industrial electrical panels, motor starters, machinery and replacement applications. Siemens' current documentation also lists the 3RB3016-1PB0 within the S00, Class 10E, screw-terminal range.

Siemens SIRIUS 3RB3 Electronic Overload Relay

The 3RB3016-1PB0 belongs to the Siemens SIRIUS 3RB electronic overload relay family. Its electronic design monitors motor current and provides electronic protection against excessive heating caused by overload, phase failure and asymmetry.

The S00 contactor-mounted construction makes it suitable for use with compatible Siemens SIRIUS contactors in compact motor-starter assemblies.

Typical applications include:

• Industrial motor protection

• Small pumps

• Fans and blowers

• Small compressors

• Conveyors

• Machine tools

• Production equipment

• Process machinery

• Motor starters

• Industrial electrical panels

Adjustable 1–4 A Current Range

The 3RB3016-1PB0 has an adjustable current-setting range of 1 to 4 A and a 4 A thermal current. Siemens confirms the 1–4 A range for this exact article.

The current setting should be selected according to the protected motor's nameplate current and the requirements of the complete motor-protection system.

This range makes the relay suitable for motors with relatively low rated currents.

Class 10E Trip Characteristic

The exact 3RB3016-1PB0 is a Class 10E electronic overload relay. Siemens' product data and current catalog identify this article 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's starting time and application conditions.

Electronic Overload Protection

The primary function of the 3RB3016-1PB0 is electronic motor-overload protection.

The relay evaluates motor current and responds when the configured overload condition 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

Proper adjustment of the current setting is essential for reliable motor protection.

Phase-Failure and Asymmetry Protection

The Siemens 3RB3 electronic overload relay family provides overload, phase-failure and asymmetry protection. Siemens lists these functions as key features of the 3RB30 Class 10E range.

Phase failure or significant current imbalance can increase motor heating and electrical stress. Electronic monitoring therefore provides additional protection for three-phase motor applications.

1 NO + 1 NC Auxiliary Contacts

The 3RB3016-1PB0 provides 1 normally open (NO) and 1 normally closed (NC) auxiliary contact. Independent technical documentation for the exact article confirms this contact arrangement.

These auxiliary contacts can be used for:

• Contactor disconnection

• Trip indication

• Control-panel feedback

• Alarm signalling

• Motor fault indication

• Electrical interlocking

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

Contactor Mounting

The 3RB3016-1PB0 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 compatible Siemens SIRIUS contactor to create a compact motor-starter assembly.

Screw-Terminal Connections

The 3RB3016-1PB0 uses screw connections for both the main and auxiliary circuits. Siemens explicitly identifies screw terminals for this article.

This provides a conventional wiring solution for industrial electrical panels, motor starters and maintenance applications.

Manual and Automatic Reset

The exact 3RB3016-1PB0 supports manual and automatic RESET. Siemens identifies this product with a Manual-Automatic-Reset configuration.

The appropriate reset mode should be selected according to the motor application and the operating requirements of the machine.

TEST Function and Self-Monitoring

The Siemens 3RB30 Class 10E family includes:

• TEST function

• Switch-position indication

• Self-monitoring

• Manual and automatic RESET

These functions can assist with commissioning, functional testing, troubleshooting and preventive maintenance.

Electrical Characteristics

The exact 3RB3016-1PB0 is specified with:

• 690 V insulation voltage

• 6 kV surge-voltage resistance

• 4 A thermal current

• Approximately 0.1 W total power loss at rated current in the hot operating state

• Approximately 0.03 W power loss per pole

Siemens specifies an operating ambient temperature range of -25 °C to +60 °C and a maximum installation altitude of 2,000 m.

These specifications should be considered during panel design and installation.

Compact S00 Design

The 3RB3016-1PB0 is a compact S00-size overload relay. Its S00 construction is intended for integration with compatible Siemens motor starters and contactors.

The compact format helps make efficient use of space in:

• Motor starters

• Electrical control panels

• Machine-control assemblies

• OEM electrical equipment

• Industrial replacement applications

Industrial Motor Applications

Small Pumps

The relay can provide overload, phase-failure and asymmetry protection for compatible low-current pump motors.

Fans and Blowers

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

Small 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

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

Production Equipment

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

Suitable for OEMs, Panel Builders and Electrical Dealers

The 3RB3016-1PB0 is suitable for OEM equipment manufacturers, electrical panel builders, industrial maintenance teams, industrial buyers and electrical product dealers.

For SB Smart, this 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 3RB3016-1PB0

• Microprocessor-based electronic overload protection

• 1–4 A adjustable current range

• Class 10E

• Size S00

• Contactor mounting

• Screw terminals for main and auxiliary circuits

• 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

• 1–4 A adjustable range: Suitable for low-current industrial motor applications.

• Class 10E: Provides a defined overload characteristic for compatible 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 3RB3016-1PB0?

The Siemens 3RB3016-1PB0 is a compact electronic overload relay for motor protection in the 1–4 A range with a Class 10E trip characteristic.

Its combination of electronic overload, 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. Siemens' current data confirms the exact configuration as 1–4 A, Class 10E, S00, contactor mounting and screw-terminal connections.

For SB Smart, the 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 3RB3016-1PB0?

It is a Siemens SIRIUS 3RB3 electronic overload relay for motor protection with a 1–4 A adjustable current range and Class 10E characteristic.

2. What is the current setting range?

The adjustable current range is 1–4 A.

3. What is the trip class?

The exact 3RB3016-1PB0 is Class 10E.

4. Does it provide phase-failure protection?

Yes. The Siemens 3RB30 Class 10E range provides phase-failure and asymmetry protection in addition to overload protection.

5. How many auxiliary contacts does it have?

It provides 1 NO + 1 NC auxiliary contacts.

6. Is it contactor-mounted?

Yes. The 3RB3016-1PB0 is designed for S00 contactor mounting.

7. Does it use screw terminals?

Yes. Siemens specifies screw connections for both the main and auxiliary circuits.

8. What reset options are available?

It supports manual and automatic RESET.

9. What are its key electrical ratings?

It has a 4 A thermal current, 690 V insulation voltage and 6 kV surge-voltage resistance.

10. Where can I buy Siemens 3RB3016-1PB0 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.