Mersen, formerly Ferraz Shawmut US22 Dimensional Sheet

UltraSafe™ US22

Fuse Holders, Fuse Bases and Supports / DS-PACYUS22-07-0716_EN

MERSEN reserves the right to change, update or correct, without notice, any information contained in this datasheet.

Modular fuse-holders

DIMENSIONS

on microswitch

FUNCTIONS

Indicator light kit for US22

With the indicator light a blown fuse can be quickly located if power is
still on.

1. Carefully remove the cover with 2 screw drivers.

2. Slip the indicator light’s to insert into the rails, being careful not to twist
the contact tabs.

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UltraSafe™ US22

Fuse Holders, Fuse Bases and Supports / DS-PACYUS22-07-0716_EN

MERSEN reserves the right to change, update or correct, without notice, any information contained in this datasheet.

Modular fuse-holders

3. Put the cover back on.

Auxiliary microswitch functions

Fuse melting: a fuse-holder containing a fuse with a striker sends out a
signal when the fuse element melts.

Pre-isolation: when opening the fuse-holder, the microswitch sends a signal
before the opening of the main contacts.

Presence: sends a signal when the holder is closed with no fuse in it.

With the fuse in the handle

closed state

No fuse - Fuse blown in

handle open

Characteristics

Rated insulation voltage: 250VAC

Rated operational current following IEC 60947-5 & -1

Utilization category AC15: 4A/24V, 4A/48V, 3A/127V, 2.5A/240V

Utilization category DC13: 3A/24V, 1A/48V, 0.2A/127V, 0.1A/240V

Minimum operational current and voltage: 1mA/4V AC or DC

Auxiliary microswitch is designed to operate equally well on dual-current
(1mA 4V minimum) or medium-current (5A maximum) circuits. However, a
given product should only be used to switch one type of circuit during its
working life.

Connection: Faston lugs

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