Visible-blade safety switch in metal enclosure, with or without fuse holders, for safe equipment disconnection.
Tell us the reference or key specification (current, power, gauge, size), quantity and city — a technical advisor sends your quote the same business day.
The safety switch (knife-blade disconnect) is a metal-enclosed switch with visible break, built to UL 98, in general duty (240 V) and heavy duty (600 V) versions with commercial ratings from 30 to 600 A. It serves as a lockable disconnecting means for equipment and motors per NTC 2050 article 430.
The knife-blade safety switch is switching equipment used to visibly disconnect circuits in panels, machines, internal service entrances and industrial distribution lines. Its main value compared with a molded case circuit breaker is visual inspection of the open state: the blades allow mechanical separation to be confirmed before working on the circuit, always within the electrical procedure defined by competent personnel. It can be quoted in a metal enclosure and, depending on the panel configuration, with fuse holders for backup protection. In industrial projects it is selected by system voltage, number of poles, rated current, load type, installation environment, required isolation capacity and compatibility with the existing protection scheme. TECTUL supplies it for maintenance, replacement and panel mounting where visible disconnection, operational lockout and a robust low-voltage switching solution are needed.
We dispatch to Bogotá, Medellín, Cali, Barranquilla and all of Colombia. Request a quote via WhatsApp for your knife-blade switch with voltage, phases, required current, circuit use and whether you need an enclosure with fuses.
| Current | Versions |
|---|---|
| 30 A · 60 A · 100 A | General duty up to 240 V or heavy duty up to 600 V; fusible (class H or J) or non-fusible; NEMA 1 indoor or NEMA 3R rainproof enclosure |
| 200 A · 400 A · 600 A |
Safety switches are certified under UL 98 (enclosed and dead-front switches). The external handle accepts a LOTO padlock and the blade window allows visual verification that the circuit is open.
We do not publish one price because it depends on current, voltage, number of poles, enclosure and whether fuse holders are required. TECTUL quotes it via WhatsApp according to the requested industrial line.
The knife-blade switch is used mainly for visible isolation and switching. The molded case circuit breaker is an automatic protective breaker against overcurrent and short circuit.
Yes, it can be quoted in configurations with or without fuse holders, according to the panel design and circuit protection required.
Yes, it is used in industrial panels when pole, voltage and current selection matches the system. These data must be confirmed for quoting.
It must be mounted in a suitable enclosure or surface, with front access, correctly tightened terminals, visible labeling and lockout procedure. Installation must be done by qualified personnel.
Yes. TECTUL dispatches to Bogotá, Medellín, Cali, Barranquilla and other cities in Colombia through prior quotation via WhatsApp.
Fusible when the point also needs short-circuit protection (equipment back-up); non-fusible when only a disconnecting means is required and protection already exists upstream.
Because it lets you see that the blades are physically open before working on the equipment — the verification step lockout-tagout procedures rely on.
Updated: July 22, 2026
