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Siemens 3TK2820-1CB30 SIRIUS Safety Relay 24V AC/DC
- Regular price
- $625.00
- Sale price
- $625.00
- Regular price
-
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Product Description P/N: 3TK2820-1CB30
Description
The Siemens 3TK2820-1CB30 is a SIRIUS safety relay designed to monitor emergency-stop circuits and protective door switches in industrial machinery. It features a 24 V AC/DC control supply, three normally open safety contacts, and one normally closed auxiliary contact. The relay helps ensure that machinery can be stopped safely when a monitored safety circuit is activated or interrupted.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Siemens |
| Category | Industrial Automation |
| Part Number | 3TK2820-1CB30 |
| Subcategory | Safety Relays |
| Product Family | SIRIUS 3TK28 |
| Rated Control Supply | 24 V AC/DC |
| Supply Frequency | 50/60 Hz for AC |
| Safety Outputs | 3 × normally open (NO), instantaneous |
| Auxiliary Output | 1 × normally closed (NC) |
| Safety Applications | Emergency stop and protective door monitoring |
| Maximum Performance Level | PL e, depending on system design |
| Maximum Safety Integrity Level | SIL 3, depending on system design |
| Rated Insulation Voltage | 300 V |
| Mounting | Snap-on DIN rail mounting |
| Electrical Connection | Screw terminals |
| Operating Temperature | −25°C to +60°C |
| Weight | 0.299 kg |
Information About 3TK2820-1CB30
The Siemens 3TK2820-1CB30 is an industrial safety relay from the SIRIUS 3TK28 series, designed for safety-related control applications. It monitors connected emergency-stop devices and protective door switches and controls safety outputs according to the configured circuit. Its automatic and monitored start functions support different machine safety requirements, while its compact housing and DIN rail mounting allow installation in industrial control cabinets. The relay is intended for integration into properly designed safety systems for compatible machinery.
Key Features:
- Emergency Stop Monitoring: Monitors emergency-stop circuits to support safe machine shutdown.
- Safety Door Monitoring: Monitors protective door and guard-switch circuits in compatible machinery.
- 24 V AC/DC Supply: Operates with a nominal 24 V AC or 24 V DC control supply.
- Three Safety NO Contacts: Provides three instantaneous normally open safety relay contacts.
- One Auxiliary NC Contact: Provides an auxiliary normally closed contact for signaling and status feedback.
- Monitored and Automatic Start: Supports monitored start and automatic start configurations, according to the application setup.
- High Safety Capability: Supports up to Performance Level e and SIL 3 when correctly designed and integrated into a suitable safety system.
- Compact DIN Rail Mounting: Uses a 22.5 mm-wide housing for installation in industrial control cabinets.
The Siemens 3TK2820-1CB30 provides safety circuit monitoring for emergency-stop systems, protective doors, and industrial machinery.
Description
The Siemens 3TK2820-1CB30 is a SIRIUS safety relay designed to monitor emergency-stop circuits and protective door switches in industrial machinery. It features a 24 V AC/DC control supply, three normally open safety contacts, and one normally closed auxiliary contact. The relay helps ensure that machinery can be stopped safely when a monitored safety circuit is activated or interrupted.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Siemens |
| Category | Industrial Automation |
| Part Number | 3TK2820-1CB30 |
| Subcategory | Safety Relays |
| Product Family | SIRIUS 3TK28 |
| Rated Control Supply | 24 V AC/DC |
| Supply Frequency | 50/60 Hz for AC |
| Safety Outputs | 3 × normally open (NO), instantaneous |
| Auxiliary Output | 1 × normally closed (NC) |
| Safety Applications | Emergency stop and protective door monitoring |
| Maximum Performance Level | PL e, depending on system design |
| Maximum Safety Integrity Level | SIL 3, depending on system design |
| Rated Insulation Voltage | 300 V |
| Mounting | Snap-on DIN rail mounting |
| Electrical Connection | Screw terminals |
| Operating Temperature | −25°C to +60°C |
| Weight | 0.299 kg |
Information About 3TK2820-1CB30
The Siemens 3TK2820-1CB30 is an industrial safety relay from the SIRIUS 3TK28 series, designed for safety-related control applications. It monitors connected emergency-stop devices and protective door switches and controls safety outputs according to the configured circuit. Its automatic and monitored start functions support different machine safety requirements, while its compact housing and DIN rail mounting allow installation in industrial control cabinets. The relay is intended for integration into properly designed safety systems for compatible machinery.
Key Features:
- Emergency Stop Monitoring: Monitors emergency-stop circuits to support safe machine shutdown.
- Safety Door Monitoring: Monitors protective door and guard-switch circuits in compatible machinery.
- 24 V AC/DC Supply: Operates with a nominal 24 V AC or 24 V DC control supply.
- Three Safety NO Contacts: Provides three instantaneous normally open safety relay contacts.
- One Auxiliary NC Contact: Provides an auxiliary normally closed contact for signaling and status feedback.
- Monitored and Automatic Start: Supports monitored start and automatic start configurations, according to the application setup.
- High Safety Capability: Supports up to Performance Level e and SIL 3 when correctly designed and integrated into a suitable safety system.
- Compact DIN Rail Mounting: Uses a 22.5 mm-wide housing for installation in industrial control cabinets.
The Siemens 3TK2820-1CB30 provides safety circuit monitoring for emergency-stop systems, protective doors, and industrial machinery.
