Based on the description "60A 2p" and the fact you've never seen one before, this most likely refers to a 60 Amp, 2-pole fuse disconnect switch. Here's a breakdown of how they generally work and whether both lines are fused

What is a 60A 2P Fuse Disconnect?
60A

This specifies the current rating of the switch and fuses. It can handle up to 60 Amps of current.

2P (2-Pole)

This means the switch has two independent switching mechanisms, each associated with one line (or "pole"). In a 240V single phase circuit or a two-phase system, it would switch both legs of the power feed. In a three-phase system, it can be used to switch two of the three legs.

Are Both Lines Fused?YES, in a typical 2-pole fused disconnect, BOTH lines are intended to be fused. Purpose

The primary function of this device is to provide both a readily accessible disconnecting means AND overcurrent protection (fuses). Both are crucial for safety and maintenance.

How it Works

Each "pole" of the switch has its own fuse holder. When the switch is closed (ON), power flows through the fuses to the connected load. If either line experiences an overcurrent condition (short circuit or overload), the respective fuse will blow, interrupting the current flow and protecting the circuit.

Safety

Fusing both lines is a common safety practice, especially in 240V circuits. If only one line is fused, a fault on the unfused line could create a hazardous condition.

Why You Can't See the Internals

These devices are designed to be relatively enclosed for safety. You typically only see the handles for switching and access to the fuse holders (often behind a cover).

Important Considerations



Voltage Rating

While the current rating (60A) is important, also ensure the disconnect switch has a voltage rating that matches or exceeds the voltage of the circuit it's protecting (e.g., 240V, 480V).

Type of Fuses

Use the correct type and size of fuses as specified by the manufacturer of the disconnect switch. Using the wrong fuses can be dangerous. Common types are cartridge fuses (like Class H, Class K, or time-delay fuses).

Installation

Installation and maintenance of electrical equipment should be performed by qualified and licensed electricians.

In summary, a 60A 2-pole fused disconnect switch is designed to provide both a disconnecting means and overcurrent protection, and it typically fuses BOTH lines for safety. If you are working with electricity and aren't completely sure of something, always consult a qualified electrician. Flag for review