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Siemens 3TK2828-1AL20 SIRIUS Safety Relay - 230V AC, Screw Terminal

Siemens 3TK2828-1AL20 SIRIUS safety relay (phased-out), 230V AC.

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ManufacturerSiemens

Part number3TK2828-1AL20

Voltage 230 V AC

Width 45 mm

Terminal Type Screw

EC Instantaneous 2 NO

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12-month warranty

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Veteran-owned

CAGE: 9NK75

230V AC supply Screw terminals Adjustable delay (0.5-30s) Automatic start feature High safety integrity (SIL 3/2, PL e/d) 45mm width

Product description

The Siemens 3TK2828-1AL20 is a SIRIUS safety relay designed for 230V AC applications. This 45mm wide unit features screw terminals and offers 2 instantaneous normally open (NO) enabling circuits and 2 delayed normally open (NO) enabling circuits with an adjustable delay from 0.5 to 30 seconds. It includes 1 normally closed (NC) safety circuit with automatic start functionality.

This safety relay was used in various industrial safety applications. While this product is phased out, its preferred successors are 3SK1121-1CB42 + 3SK1230-1AW20, offering enhanced features and support.

Stanlo Automation, a veteran-owned surplus parts distributor, may have this phased-out Siemens 3TK2828-1AL20 available. We strive to provide solutions for your industrial automation needs, including legacy components, while also guiding you towards current and supported alternatives.

Technical specifications

Voltage	230 V AC
Width	45 mm
Terminal Type	Screw
EC Instantaneous	2 NO
EC Delayed	2 NO (0.5-30 s)
SC	1 NC
Automatic Start	Yes
SIL	3/2
PL	e/d

Common applications

Industrial safety

Machine control

Automation systems

Legacy equipment support

Compatible systems

General industrial control panels

Also known as

Siemens 3TK2828-1AL20

Replaces / compatible with

This product is phased out. The preferred successors are 3SK1121-1CB42 + 3SK1230-1AW20.

Technical note

Expert tip

Due to this part being phased out, ensure availability of spare parts or consider migrating to the recommended successor products for long-term support and enhanced features.

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Frequently asked questions

Is the Siemens 3TK2828-1AL20 safety relay still available?

The Siemens 3TK2828-1AL20 is listed as a phased-out product. While Stanlo Automation may have surplus stock, Siemens recommends the successor products 3SK1121-1CB42 + 3SK1230-1AW20 for new installations or replacements.