Safety Depth Switch for an underwater telephone onboard a submarine.
The safety depth switch is made from multiple components, including: cast aluminium housing, internal brass pressure switch, terminal blocks and wiring.
The product switches the underwater telephone on/off when the submarine is at a set depth. The Safety Depth Switch is mounted in a part of the submarine that free-floods with sea water. An opening on the side of the case allows the seawater to exert a force on the internal pressure switch. As the submarine dives, the pressure increases and at a set depth the internal pressure switch will activate and turn on the circuit for the underwater telephone. The safety depth switch operates with a voltage of 24V.
It is normally transported in it’s own wooden crate.
Keywords
SUBMARINES
UNDERWATER
FOR VOLTAGE < 80 V
TELEPHONE PARTS
SWITCHES, ELECTRICAL CURRENT
PART OF
PRESSURE-SENSITIVE
Justification
Classification has been determined in accordance with the following:
For the purposes of determining the commodity codes within which goods most appropriately fall, reg 3 (1) of The Customs Tariff (Establishment) (EU Exit) Regulations 2020 sets out that the rules of interpretation contained in the following have effect –
a. Part Two (Goods Classification Table Rules of Interpretation) of the Tariff of the United Kingdom (Reg 3(1)(a)); and
b. Notes to a section or chapter of the Goods Classification Table (Reg 3(1)(b)).
General interpretative rules (GIR)s:
GIR 1 - has been used to classify this product by the terms of heading 8536 - Electrical apparatus for switching or protecting electrical circuits, or for making connections to or in electrical circuits (for example, switches, relays, fuses, surge suppressors, plugs, sockets, lamp holders and other connectors, junction boxes), for a voltage not exceeding 1 000 v; connectors for optical fibres, optical fibre bundles or cables
GIR 5 (b) - has been used to identify the type of packaging. Individual wooden crate
GIR 6 has been used to classify this product to subheading level 853650 - Other switches
8 Digit Code 85365019 - Other; for a voltage not exceeding 60v; Other than push-button or rotary switches
10 digit code 8536501990 - Other than for use in certain types of aircraft
Also classified in accordance with:
Note 2 (a) to Section XVI
Harmonized System Explanatory Notes (HSEN) (I) (A) to Heading 8536
Harmonized System Explanatory Notes (HSEN) Section XVI (ii) Parts (Section Note 2)