The Siemens 3RT2028-1BB40 contactor is a robust electrical device designed to control power circuits up to 18.5 kW. Operating at 24 V DC, it can handle a current of up to 38 A and includes an auxiliary contact for added functionality. Typical applications include motor control and switching operations in industrial and commercial environments.
| Type |
Contactor |
| Coil Voltage |
24V DC |
| Connection |
Screw terminal |
| Contact Current Rating |
38A |
| Contact Type |
3 makers |
| Current load |
38A |
| Depth |
107mm |
| Dimensions |
(W x H x D) 45 x 85 x 107 mm |
| Durability |
1.0E7 |
| Height |
85mm |
| IP Rating |
IP20 |
| Maximum Temperature |
+60°C |
| Min. temperature |
-25°C |
| Misc Attribute 1 |
3RT2028-1BB40 |
| Misc Attribute 2 |
S0 |
| Mounting Style |
DIN rail |
| Number of auxiliary contacts as normally closed contact |
1 |
| Number of auxiliary contacts as normally open contact |
1 |
| Number of normally closed contacts as main contact |
N/A |
| Number of normally open contacts as main contact |
3 |
| Number of Poles |
3 |
| Operating voltage AC 50 Hz |
N/A |
| Operating voltage AC 60 Hz |
N/A |
| Power |
18.5kW |
| Power Rating |
18.5 |
| Rated control supply voltage AC 50 Hz |
N/A |
| Rated control supply voltage AC 60 Hz |
N/A |
| Rated control supply voltage DC |
24 - 24V |
| Rated operation current Ie at AC-1, 400 V |
50A |
| Rated operation current Ie at AC-3, 400 V |
38A |
| Rated operation current Ie at AC-4, 400 V |
22A |
| Rated operation power at AC-3, 400 V |
18.5kW |
| Rated operation power at AC-4, 400 V |
N/A |
| Rated operation power NEMA |
18.38746875 |
| Suitable for distribution board |
TRUE |
| Switching voltage (max.) |
400V AC |
| Terminals |
3-pin |
| Type of electrical connection of main circuit |
Screw connection |
| Voltage type for actuating |
DC |
| Weight |
0.60 |
| Width |
45mm |
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