Hager SFL125 25A 1 Pole Modular Changeover Switch Bottom Common Point

Description

Two supplies, one switch, one module.

The Hager SFL125 is a 1 pole, 25A modular changeover switch that selects between two power sources on a single DIN rail module. With its common point at the bottom, it gives a clean manual transfer between supply A and supply B, making it well suited to caravans, RVs and modular sub-boards where space is tight.

Key Features

• 25A rated current (IN)
• 1 pole (1P) changeover, bottom common point
• Single module (17.5mm) width
• Rated operational voltage 230V AC, 50-60Hz
• Utilisation categories AC21 and AC22 at 25A
• Screw terminals, 1.5-16mm2 rigid / 1.5-10mm2 flexible
• 200,000 mechanical operations, 25,000 electrical (AC21/AC22)
• IP20, DIN rail mounting
• Rated insulation voltage Ui 440V, impulse withstand Uimp 4kV

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What Is a Changeover Switch?

A changeover switch lets you select between two power sources for the same circuit, one at a time. The SFL125 is a single-pole version with the common terminal at the bottom, so the shared connection lands below and the two selectable sources connect above. It is a manual switch, giving a positive, visible position for each supply.

Compact Sub-Board and RV Fit

At one module wide, the SFL125 fits neatly into a distribution board or a caravan sub-board without consuming space. It mounts on standard 35mm DIN rail, accepts rigid conductors up to 16mm2 through screw terminals, and is rated for utilisation categories AC21 and AC22 at 25A, covering resistive and mixed inductive loads.

Built to Last

Rated for 200,000 mechanical operations and 25,000 electrical operations at nominal load, the SFL125 is built for repeated switching over a long service life. An operating temperature range of -20 to 50 degrees Celsius suits it to a range of Australian installation environments.

Q: What does the Hager SFL125 do?
A: It is a single-pole manual changeover switch that selects between two power supplies for one circuit, with the common point at the bottom, rated 25A at 230V AC.

Q: What size cable can the SFL125 take?
A: Its screw terminals accept rigid conductors from 1.5 to 16mm2 and flexible conductors from 1.5 to 10mm2, tightened to 1.8Nm.

Q: What is the difference between the SFL125 and the SFM125?
A: Both are 1 pole 25A changeover switches. The SFL125 has a bottom common point, while the SFM125 has no common point.