Siemens 3RV1011-1GA20 Replacement for SIRIUS 3RV1

Product Overview

Siemens 3RV1011-1GA20 Replacement/Upgrade Solution for SIRIUS 3RV1: Smooth Transition from Legacy Motor Protection Systems

The Siemens 3RV1011-1GA20 is a SIRIUS 3RV1 series motor starter protector in the compact S00 frame, rated for 4.5–6.3A with a breaking capacity of up to 100kA at 400V AC. As industrial facilities phase out aging motor protection assemblies—particularly legacy SIRIUS 3RV10 and earlier 3VE-series circuit breakers—the 3RV1011-1GA20 serves as a direct-fit, code-compliant replacement that minimizes engineering rework, panel redesign, and commissioning time.

Whether your plant is retiring a 3VE1010-2EU00 or migrating from an older 3RV1011-1GA10 variant with a different trip class, the 3RV1011-1GA20 slots into the same S00 DIN-rail or busbar mounting footprint. The screw-terminal wiring layout is preserved, meaning field technicians can reconnect existing cable looms without re-ferrulling or re-routing conductors. This is especially valuable in dense motor control centers (MCCs) where cable management space is limited and downtime windows are measured in hours, not days.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration from a legacy motor protection circuit to the 3RV1011-1GA20 rarely involves the circuit breaker alone. In practice, the upgrade touches several adjacent components within the same control cabinet or MCC section.

For facilities running Siemens SIRIUS contactor assemblies, the 3RV1011-1GA20 is designed to be directly coupled with a 3RT2015 or 3RT2016 contactor using the 3RA1921-1BA00 link module, forming a compact direct-on-line (DOL) starter without additional wiring between the two devices. This combination eliminates the need for separate overload relays such as the 3RU2116 series, since the 3RV1011-1GA20 integrates thermal-magnetic overload protection natively.

When the legacy system included a standalone 3RU1116 or 3RU2116 overload relay mounted downstream of an older MCCB, the migration to the 3RV1011-1GA20 consolidates both functions into a single device, freeing up panel space—a critical advantage in retrofit projects where the control cabinet enclosure cannot be enlarged.

For plants that require remote diagnostics or integration with a PROFIBUS DP or AS-Interface network, the 3RV1923-1DA00 AS-Interface module can be snapped onto the 3RV1011-1GA20 without tools, enabling trip status, current monitoring, and remote reset commands to be transmitted to a Siemens S7-300 or S7-1200 PLC over the existing fieldbus infrastructure. This is particularly relevant for facilities migrating from hardwired relay logic panels to networked motor management architectures.

In applications where the motor feeder circuit requires additional signaling—such as a door-interlock or auxiliary trip output—the 3RV1901-1A auxiliary contact block attaches directly to the side of the 3RV1011-1GA20, providing one NO and one NC contact without consuming additional DIN-rail space. Similarly, the 3RV1915-1CB shunt trip release can be added for remote electrical tripping from a safety relay or emergency stop circuit.

For multi-motor systems being upgraded from older Siemens SIMATIC ET 200S distributed I/O motor starter modules, the 3RV1011-1GA20 can serve as the local protection device while the control logic is redistributed to a Siemens ET 200SP or ET 200MP I/O station connected to the main S7-1500 controller. In such architectures, the 3RV1011-1GA20 handles the physical protection layer while the PLC manages sequencing, interlocking, and fault logging.

Power supply integrity is equally important during migration. If the existing 24VDC control circuit is sourced from an aging Siemens SITOP PSU100S power supply, it is advisable to verify output ripple and load regulation before commissioning the new motor starter assembly, as nuisance tripping can occur if the control voltage drops below the coil hold-in threshold of the associated 3RT contactor.

Retrofit Guidance FAQ

Q: Can I reuse the existing wiring when replacing a 3VE1010-2EU00 with the 3RV1011-1GA20?
A: Yes. The S00 frame screw-terminal layout is dimensionally compatible. Cable cross-sections up to 10mm² (AWG 8) are accepted on the load side. Verify torque values per the 3RV1011 installation manual (typically 2.5 Nm on main terminals).

Q: Does the 3RV1011-1GA20 require a different DIN-rail cutout or panel depth?
A: No. The S00 frame depth and DIN-rail clip are identical to the 3RV1011-1GA10 and most 3VE S00-frame devices. Panel depth requirement is approximately 75mm behind the DIN rail.

Q: Is the trip class adjustable?
A: The 3RV1011-1GA20 uses Trip Class 10A as standard. If your application requires Class 10 or Class 20 (e.g., high-inertia loads such as centrifugal pumps or compressors), confirm the trip class suffix in the order number before procurement.

Q: Can this device communicate with a Siemens S7-300 or S7-1500 PLC?
A: Directly, no—the base unit is a standalone electromechanical device. However, with the 3RV1923-1DA00 AS-Interface module, it can be integrated into an AS-i network and read by any S7 PLC equipped with an AS-i master module (e.g., CP 343-2).

Q: What is the recommended procedure for commissioning after replacement?
A: (1) Set the current dial to match the motor FLA. (2) Verify phase sequence and supply voltage. (3) Perform a manual trip test using the TEST button. (4) Reset and energize the contactor. (5) Monitor for thermal trip during the first full-load start cycle. No software configuration is required for the base unit.

Q: Can the 3RV1011-1GA20 replace a 3RU overload relay in an existing contactor assembly?
A: Yes, when combined with a 3RT2015/3RT2016 contactor via the 3RA1921-1BA00 link module, the 3RV1011-1GA20 replaces both the MCCB and the overload relay, simplifying the assembly and reducing the number of field-replaceable components.

Warranty Assurance

Every Siemens 3RV1011-1GA20 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each unit undergoes functional verification including continuity testing, trip mechanism actuation, and visual inspection for transit damage. Units are shipped in original or equivalent protective packaging with desiccant where required for long-haul freight.

In the event of a confirmed defect within the warranty period, TOPNLMS provides replacement dispatch within 3 business days of fault confirmation. Our technical support team is available to assist with installation queries, compatibility verification, and commissioning guidance via email at [email protected] or by phone at +86 18359293191.

We maintain bonded stock of high-demand SIRIUS 3RV1 series components to support urgent MRO (Maintenance, Repair & Operations) requirements. Express air freight options are available for time-critical plant shutdowns. All export documentation, including commercial invoices, packing lists, and certificates of origin, is prepared in compliance with international trade requirements.

TOPNLMS serves industrial buyers across manufacturing, energy, water treatment, and process automation sectors. Our procurement team can assist with multi-line BOM sourcing, cross-referencing discontinued part numbers, and consolidating shipments to reduce freight costs for larger retrofit projects.