Home › Manufacturers › Siemens › 3RK3251-1AA10

Siemens

Siemens 3RK3251-1AA10 SIRIUS Expansion Module

Siemens 3RK3251-1AA10 SIRIUS safety expansion module with 4/8 F-RO.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RK3251-1AA10

Series SIRIUS 3RK32

Type Expansion Module

Outputs 4/8 F-RO

Voltage 24 V DC

Get a price for 3RK3251-1AA10

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Modular safety system expansion Configurable F-RO High safety integrity (SIL 3, PL e) Screw terminals 45 mm width MSS ES configurable

Product description

The Siemens 3RK3251-1AA10 is a SIRIUS expansion module for the modular safety system 3RK3. It provides 4 or 8 fail-safe relay outputs (F-RO) and operates at 24 V DC with a 2 A current rating for its outputs. This module is configurable via the Siemens MSS ES software and features screw terminals. It achieves up to SIL 3 (IEC 61508) and Performance Level e (ISO 13849-1), making it suitable for high-integrity safety applications.

This module is essential for expanding the output capabilities of a 3RK3 modular safety system, enabling the control of multiple loads or safety devices. It is widely used in industrial automation, machine building, and other sectors requiring robust and certified safety solutions for personnel and equipment protection.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3RK3251-1AA10. Secure reliable and cost-effective surplus industrial automation components from Stanlo.

Technical specifications

Series	SIRIUS 3RK32
Type	Expansion Module
Outputs	4/8 F-RO
Voltage	24 V DC
Current	2 A
Safety Level	SIL 3 (IEC 61508), PL e (ISO 13849-1)
Terminals	Screw terminal
Width	45 mm

Common applications

Machine Safety

Industrial Automation

Control Systems

Safety Relays

Actuator Control

High-Power Outputs

Process Safety

Compatible systems

Siemens SIRIUS 3RK3 Modular Safety System MSS ES Software

Also known as

Siemens 3RK3251-1AA10 SIRIUS 3RK3 Relay Expansion Modular Safety Output Module

Replaces / compatible with

This module serves as an expansion for the Siemens SIRIUS 3RK3 modular safety system, adding fail-safe relay output capabilities.

Technical note

Expert tip

The use of screw terminals ensures a secure and reliable connection for higher current loads compared to spring-type terminals.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What is the current rating for the relay outputs on the Siemens 3RK3251-1AA10 module?

The Siemens 3RK3251-1AA10 SIRIUS expansion module provides 4 or 8 fail-safe relay outputs, each rated for 2 A at 24 V DC. This allows for the control of various loads within safety-critical applications.