Description
Product Overview
The Siemens HD Type 1 is a 30 Amp, 3‑Pole, 600 V fusible switch designed for heavy‑duty circuit protection. Constructed with robust HD‑type contacts and a quick‑make, quick‑break operating mechanism, it provides positive operation and rapid fault isolation. Arc chutes dissipate heat, extending switch life, while the hinged clear line terminal shield with probe holes allows easy inspection and testing of line side terminals. Dimensions are 18.3 × 11.1 × 7.7 inches and it weighs 10 lb.
Usage
This switch is ideal for industrial facilities, commercial buildings, and large‑scale residential projects where reliable panel safety is critical. It fits standard 3‑wire distribution panels and is suited for electricians, maintenance engineers, and contractors who need dependable fault protection in high‑current environments. 
Why Choose Us
Siemens delivers decades of engineering excellence, and the HD Type 1 reflects that heritage with rigorous testing and compliance to international safety standards. Our product guarantees consistent performance, low maintenance, and a long service life, backed by a solid warranty and responsive technical support.
Key Features
- 30 A rating with 600 V capability for high‑load circuits
- Quick‑make, quick‑break mechanism ensures fast, positive operation
- Arc chutes effectively dissipate heat, prolonging switch lifespan
- Hinged clear line terminal shield with probe holes for easy inspection
- Durable HD‑type construction meets rigorous industrial standards
FAQ
What is the difference between a fusible switch and a regular circuit breaker?
A fusible switch uses a replaceable fuse element to interrupt fault currents, offering precise coordination and easy maintenance, whereas a standard breaker relies on internal mechanisms that may require full replacement after a trip.
Can this switch be used in residential panels?
While it meets industrial specifications, it can be installed in residential panels that require a 3‑pole, 600 V protection device, provided local codes permit its use.
How often should the fuse be inspected or replaced?
Inspect the fuse during routine maintenance or after any fault event. Replace it immediately if visual damage, discoloration, or a blown condition is observed.
Is the switch compatible with all Siemens panel boards?
It is compatible with most Siemens panel boards that accept a 3‑pole, 30 A fusible switch. Verify mounting dimensions and bus bar spacing before installation.
What safety certifications does this product have?
The HD Type 1 complies with UL, IEC, and CSA standards for electrical safety and performance, ensuring reliable operation in regulated environments.




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