3LD2164-0TB53 | Siemens SENTRON 3LD2064‑0TB53 3‑Pole Switch Disconnector – 25A, 9.5 kW, IP65 Rotary Isolator

The Siemens 3LD2164‑0TB53 from the SENTRON 3LD series is a reliable 3‑pole rotary switch disconnector designed for emergency-stop, maintenance, and main isolation applications. Featuring a 25 A continuous current rating, it handles up to 9.5 kW at 400 V (AC‑23A)—making it ideal for industrial use . Its IP65-rated molded-plastic enclosure shields it from dust and water, and its red/yellow rotary handle offers clear ON/OFF indication along with a lockable OFF position for secure maintenance . The device supports up to 100,000 mechanical cycles, a surge resistance of 6 kV, and complies with NEMA ratings 1, 4X, and 12 

FAQ:
1: What is the main function of the 3LD2164‑0TB53?
It serves as an emergency-stop or maintenance switch disconnector, enabling safe power isolation during interventions and shutdowns.

2: Is it suitable for harsh environments?
Yes, with its IP65-rated enclosure, it offers excellent protection against dust, water, and corrosive industrial environments.

3: Can it be locked in the OFF position?
Absolutely—there’s a provision to lock the rotary handle in the OFF position for added safety during maintenance.

4: What is its load capacity?
It supports up to 9.5 kW at 400 V under AC‑23A switching conditions and 25 A continuous current.

5: How durable is it?
It can withstand up to 100,000 mechanical cycles and handles surges up to 6 kV, ensuring long-term reliability.