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Siemens 3TK2830-1CB30 SIRIUS Safety Relay - 24V AC/DC

Siemens 3TK2830-1CB30 SIRIUS Safety Relay

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ManufacturerSiemens

Part number3TK2830-1CB30

Voltage 24V AC/DC

Width 22.5 mm

Terminals Screw

EC Instantaneous 4 NO

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4 NO instantaneous EC contacts 1 MK feedback/retraction contact 24V AC/DC operation Compact 22.5mm width Expansion unit High safety standards

Product description

The Siemens 3TK2830-1CB30 is a SIRIUS safety relay designed for monitoring safety-related circuits. Operating on 24V AC or DC, this compact 22.5mm unit features screw terminals for secure connections. It provides 4 normally open (NO) instantaneous enabling circuits (EC) and no delayed enabling circuits. Additionally, it includes one feedback/retraction monitoring contact (MK).

This safety relay functions as an expansion unit, enhancing the capabilities of a safety system. It is suitable for applications requiring up to SIL 3 / PL e performance levels when integrated into a complete safety solution.

Stanlo Automation, a veteran-owned surplus parts distributor, offers reliable industrial automation components. We are committed to providing quality parts, ensuring your machinery operates safely and efficiently.

Technical specifications

Voltage	24V AC/DC
Width	22.5 mm
Terminals	Screw
EC Instantaneous	4 NO
EC Delayed	0
MK	1 NC
SIL	Up to 3
PL	Up to e
Type	Expansion Unit

Common applications

Machine safety

Industrial automation

Safety control systems

Control panels

Compatible systems

Designed to interface with Siemens safety systems and sensors.

Also known as

Siemens SIRIUS Expansion Unit 24V AC/DC Safety Relay

Replaces / compatible with

This unit is part of the SIRIUS safety relay family and is being replaced by devices in the 3SK series. Refer to Siemens documentation for specific successors.

Technical note

Expert tip

This expansion unit requires a base safety relay unit to function within a complete safety circuit.

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Frequently asked questions

What are the voltage and contact specifications for the Siemens 3TK2830-1CB30 safety relay?

The Siemens 3TK2830-1CB30 safety relay operates on 24V AC or DC and features four normally open (NO) instantaneous enabling circuits (EC) and one feedback/retraction monitoring contact (MK).