The Siemens 3RH2431-1AP00 is a latched contactor relay from the Siemens SIRIUS 3RH2 series, designed for industrial control, automation, switching, interlocking and signalling applications. It features 3 normally open (NO) and 1 normally closed (NC) contacts, a 230 V AC coil, 50/60 Hz operation and screw-terminal connections in a compact S00 frame size. Siemens' current product data identifies this exact article with these specifications and lists it as available for sale.
The 3RH2431-1AP00 belongs to the Siemens SIRIUS 3RH2 contactor relay family, designed for switching control and auxiliary circuits in industrial electrical systems.
Its compact S00 format and multiple auxiliary contacts make it suitable for industrial control panels where a maintained switching state and flexible contact configuration are required.
Typical applications include:
Industrial automation
Machine-control panels
Motor-control circuits
Electrical interlocking
Process-control systems
Auxiliary switching
Production machinery
OEM control panels
Industrial signalling systems
A key characteristic of the 3RH2431-1AP00 is its latched operation.
A latched contactor relay is designed to maintain its switching state through its latching mechanism rather than requiring continuous coil energization simply to hold that state.
This can be useful for:
Maintained control functions
Sequential machine control
Switching-memory applications
Electrical control systems
Auxiliary circuits
Industrial automation sequences
The exact latching and release sequence should be implemented according to the manufacturer's wiring instructions and the requirements of the complete control system.
The 3RH2431-1AP00 provides 3 normally open contacts and 1 normally closed contact.
This 3 NO + 1 NC arrangement offers several switching paths for control, feedback, interlocking and signalling applications. Siemens identifies the relay as a 31E contact configuration.
Typical uses include:
Auxiliary switching
Contactor-status feedback
PLC inputs
Electrical interlocking
Machine sequencing
Control logic
Alarm and status signalling
Relay-control circuits
The 3RH2431-1AP00 uses a 230 V AC control coil and supports 50/60 Hz operation.
This makes it suitable for compatible AC control circuits in industrial control panels.
The control supply should always be matched with the exact product marking and the electrical requirements of the installation before energizing the relay.
The product is equipped with screw-terminal connections, providing a conventional wiring method for industrial control panels.
Screw terminals are familiar to panel builders and maintenance teams and support practical installation, commissioning and servicing of control circuits. Siemens identifies the exact article as a screw-terminal, S00-size contactor relay.
The 3RH2431-1AP00 is a Size S00 contactor relay.
Its compact form factor is useful for electrical cabinets and machine-control panels where efficient use of panel space is important.
It can be integrated into:
Control cabinets
Automation panels
Machine-control stations
OEM equipment
Relay-control assemblies
The Siemens 3RH2431-1AP00 can be integrated into control systems where a maintained switching state and multiple auxiliary contacts are required.
The latched relay can support maintained control functions and machine sequences.
Its auxiliary contacts can be incorporated into motor-control logic, feedback and interlocking circuits.
The contacts can provide suitable digital feedback or control signals to PLC-based systems where the electrical ratings are compatible.
The maintained contact state can be useful where a switching condition must remain active until a subsequent release or switching action occurs.
Its compact S00 form factor and 3 NO + 1 NC configuration make it suitable for standardized OEM panel designs.
The 3RH2431-1AP00 is suitable for OEM machine manufacturers, electrical panel builders, automation integrators and industrial maintenance professionals.
Its combination of latched operation, 3 NO + 1 NC contacts, 230 V AC coil and screw terminals makes it suitable for industrial control applications requiring maintained switching states and flexible auxiliary contacts.
Siemens SIRIUS 3RH2 contactor relay
Article number 3RH2431-1AP00
Latched contactor relay
Size S00
3 NO + 1 NC contacts
230 V AC coil
50/60 Hz AC operation
Screw terminals
Suitable for auxiliary switching
Suitable for electrical interlocking
Suitable for PLC feedback
Suitable for machine-control applications
Suitable for industrial automation
Suitable for OEM control panels
Latched operation: Maintains the selected switching state through the relay's latching mechanism.
3 NO + 1 NC contacts: Provides multiple control and signalling paths.
230 V AC coil: Suitable for compatible industrial AC control systems.
Screw terminals: Provides a familiar industrial wiring method.
Compact S00 design: Helps optimize control-panel space.
Flexible control logic: Supports switching, feedback, signalling and interlocking.
Automation integration: Suitable for PLC and relay-control architectures.
OEM-friendly: Suitable for industrial machine-control and panel-building applications.
The Siemens 3RH2431-1AP00 combines latched contactor-relay operation, 3 NO + 1 NC contacts, a 230 V AC coil and screw-terminal connections in a compact S00 device.
It is suitable for control systems where a maintained switching state is required for machine sequencing, interlocking, signalling or automation functions.
Siemens currently identifies the article as available for sale, making it suitable for procurement where this exact configuration is required.
For OEMs, panel builders and automation integrators, it provides a practical solution for maintained auxiliary switching and industrial control applications.
SB Smart supplies Siemens industrial electrical and automation products across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and all major cities across India.
Major delivery locations include:
Faridabad
Gurgaon/Gurugram
Delhi
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
It is a Siemens SIRIUS 3RH2 latched contactor relay with 3 NO + 1 NC contacts, a 230 V AC coil and screw terminals.
The 3RH2431-1AP00 uses a 230 V AC coil and supports 50/60 Hz operation.
It provides 3 normally open and 1 normally closed contacts.
It is a Size S00 device.
Yes. The product is specified with screw-terminal connections.
It is used where a maintained switching state is required for control, sequencing, interlocking or automation functions.
Yes. Its auxiliary contacts can be incorporated into suitable PLC feedback and control circuits, provided the electrical ratings are compatible.
It can be used in industrial automation, machine-control systems, process equipment, OEM panels and auxiliary switching applications.
Siemens' current Industry Mall listing identifies the 3RH2431-1AP00 as a product available for sale.
You can explore the Siemens product range at SB Smart for Siemens contactor relays, auxiliary contact blocks, contactors and other industrial automation products.
| Specification | Details |
|---|---|
| Product Name | Latched Contactor Relay |
| Manufacturer | Siemens |
| Brand | Siemens |
| Series | SIRIUS 3RH2 |
| Model Number | 3RH2431-1AP00 |
| SKU | 3RH2431-1AP00 |
| Product Type | Mechanical Latching Contactor Relay |
| Relay Type | Auxiliary Contactor Relay |
| Frame Size | S00 |
| Contact Configuration | 3NO + 1NC |
| Number of Normally Open Contacts | 3 |
| Number of Normally Closed Contacts | 1 |
| Coil Voltage | 230V AC |
| Frequency | 50/60 Hz |
| Connection Type | Screw Terminals |
| Mounting Type | DIN Rail / Panel Mount |
| Rated Insulation Voltage (Ui) | 690 V |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV |
| Rated Operational Current AC-15 at 230V | 10 A |
| Rated Operational Current AC-15 at 400V | 3 A |
| Protection Class | IP20 |
| Mechanical Latching | Yes |
| Mechanical Endurance | Up to 10 Million Operations |
| Operating Temperature | -25°C to +60°C |
| Storage Temperature | -55°C to +80°C |
| Standards Compliance | IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1 |
| Applications | Control, Interlocking, Signaling & Automation |
| Product Family | Siemens SIRIUS Control Relays |
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