The Siemens circuit breaker, model 3LD21030TK53, features a red and yellow 3-pin design with a capacity of 16 mm², 25 A, and can handle up to 690 V AC. It is designed for use in industrial electrical installations to safeguard circuits from overload and short circuit conditions. This product ensures reliable operation in demanding environments, maintaining electrical safety and equipment protection.
| Type |
Circuit breaker |
| Colour control element |
Red |
| Cross Section |
16mm² |
| Degree of protection (IP), front side |
IP65 |
| Degree of protection (NEMA) |
Other |
| Depth |
92.5mm |
| Device construction |
Built-in device fixed built-in technique |
| Dim |
(W x H x D) 67 x 84 x 92.5 mm |
| Height |
84mm |
| Interlockable |
TRUE |
| Max. rated operation voltage Ue AC |
690V |
| Misc Attribute |
Emergency stop switch |
| Motor drive integrated |
FALSE |
| Motor drive optional |
FALSE |
| Nominal Current |
25A |
| Nominal current - rounded value |
25A |
| 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 Poles |
3 |
| Number of switches |
1 |
| Operating Voltage |
690V AC |
| Rated operation power at AC-23, 400 V |
10kW |
| Rated operation power at AC-3, 400 V |
8kW |
| Rated permanent current at AC-21, 400 V |
25A |
| Rated permanent current at AC-23, 400 V |
20 |
| Rated permanent current Iu |
25A |
| Rated short-time withstand current lcw |
0.64kA |
| 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 |
TRUE |
| 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 |
67mm |
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