3TH4280-0BB4

Siemens SIRIUS 3TH4280-0BB4 Contactor Relay, 8 Normally Open, 24VDC
Siemens SIRIUS 3TH4280-0BB4 Contactor Relay, 8 Normally Open, 24VDC

Siemens SIRIUS 3TH4280-0BB4 contactor relay, 8-pole fully normally open (8NO) contacts, coil 24V DC, AC-15 rated 10A (230V)/2A (690V), screw terminal, IP20 protection, temperature -25~55°C.

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Siemens SIRIUS 3TH4280-0BB4 Contactor Relay, 8 Normally Open, 24VDC
Product Positioning

The 3TH4280-0BB4 is the most common 24V DC coil model in the Siemens SIRIUS 3TH4280 normally open series, and is widely used for PLC output expansion and control circuit linkage.

Core Product Advantages and Features
8 sets of normally open contacts
All 8 pole contacts are normally open (NO), making them suitable for signal expansion or multi-circuit linkage.
24V DC coil
The coil has a rated control voltage of 24V DC, which is compatible with the output voltage of most PLCs, making it easy to directly control the circuit.
Screw terminal design
Both the main and auxiliary circuits use screw terminals for connection, making wiring and field maintenance identification more intuitive.
Flexible installation method
It supports quick installation with 35mm guide rail clips, and can also be fixed to the panel with screws, offering high construction flexibility.
project Specification
model 3TH4280-0BB4
Product Type SIRIUS contactor relays
Contact configuration 8. Normally Open (NO)
Extreme number 8 poles
Coil rated voltage 24V DC
Rated current (AC-15, 230V/690V) 10A/2A
Rated current (DC-13, 48V/440V) 10A/0.6A
Terminal type screw terminal
Installation method Guide rail clips/screws fixing
Protection level IP20
Ambient temperature -25°C ~ +55°C
External dimensions (height x width x depth) 78 x 45 x 135 mm
Place of origin Türkiye (may vary depending on the batch supplied)

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