3TH4280-0BM4

Siemens SIRIUS 3TH4280-0BM4 Contactor Relay, 8 Normally Open, 220VDC
Siemens SIRIUS 3TH4280-0BM4 Contactor Relay, 8 Normally Open, 220VDC

Siemens SIRIUS 3TH4280-0BM4 contactor relay, 8-pole fully normally open (8NO) contacts, 220V DC coil, screw terminal, can be fixed with rail clips or screws, IP20 protection, temperature range -25~55°C.

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Siemens SIRIUS 3TH4280-0BM4 Contactor Relay, 8 Normally Open, 220VDC
Product Positioning

The 3TH4280-0BM4 belongs to the Siemens SIRIUS 3TH4280 normally open series. The coil is rated at 220V DC and is suitable for expanding the contacts of existing switchboard systems with high DC control voltage.

Core Product Advantages and Features
8 sets of normally open contacts
All 8 pole contacts are normally open (NO) type, which can be used as auxiliary control signal expansion or linkage.
220V DC coil
The coil has a rated control voltage of 220V DC, which is suitable for specific DC control systems or existing high-voltage DC panels.
Screw terminal design
Both the main and auxiliary circuits use screw terminals for connection, which facilitates wiring construction and on-site maintenance and interpretation.
Dual-purpose mounting rail and screw
It supports quick installation with 35mm guide rail clips, and can also be fixed to the panel with screws, improving on-site construction flexibility.
project Specification
model 3TH4280-0BM4
Product Type SIRIUS contactor relays
Contact configuration 8. Normally Open (NO)
Extreme number 8 poles
Coil rated voltage 220V 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

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