The Siemens 3LD25040TK51 is a black, 3-pin circuit breaker designed for use with 35 mm² wiring, handling up to 63 A at 690 V AC. This robust component provides reliable protection and control within electrical circuits, ideal for industrial and commercial applications. It is typically used in power distribution systems to safeguard against overloads and short circuits.
| Type |
Circuit breaker |
| Number of Positions |
3 |
| Colour control element |
Black |
| Cross Section |
35mm² |
| Degree of protection (IP), front side |
IP65 |
| Degree of protection (NEMA) |
Other |
| Depth |
110.5mm |
| Device construction |
Built-in device fixed built-in technique |
| Dim |
(W x H x D) 90 x 106 x 110.5 mm |
| Factory colour |
Black |
| Height |
106mm |
| Interlockable |
TRUE |
| Max. rated operation voltage Ue AC |
690V |
| Misc Attribute |
Step Switches |
| Motor drive integrated |
FALSE |
| Motor drive optional |
FALSE |
| Nominal Current |
63A |
| Nominal current - rounded value |
63A |
| Nominal Voltage |
690V AC |
| Number of auxiliary contacts as change-over contact |
0 |
| Number of auxiliary contacts as normally closed contact |
0 |
| Number of auxiliary contacts as normally open contact |
0 |
| Number of Pins |
3 |
| Number of switches |
1 |
| Operating Voltage |
690V AC |
| Rated operation power at AC-23, 400 V |
22kW |
| Rated operation power at AC-3, 400 V |
19kW |
| Rated permanent current at AC-21, 400 V |
63A |
| Rated permanent current at AC-23, 400 V |
43 |
| Rated permanent current Iu |
63A |
| Rated short-time withstand current lcw |
1.26kA |
| Suitable for distribution board installation |
FALSE |
| Suitable for floor mounting |
FALSE |
| Suitable for front mounting 4-hole |
TRUE |
| Suitable for front mounting centre |
FALSE |
| Suitable for intermediate mounting |
FALSE |
| Type of control element |
Short thumb-grip |
| Type of electrical connection of main circuit |
Frame clamp |
| Version as emergency stop installation |
FALSE |
| Version as main switch |
TRUE |
| Version as maintenance-/service switch |
TRUE |
| Version as reversing switch |
FALSE |
| Version as safety switch |
TRUE |
| Voltage release optional |
FALSE |
| Width |
90mm |
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