SEL-400 - Switch Steren - Free user manual and instructions

Product Type	Switch
Brand	Steren
Model	SEL-400
Dimensions (approx.)	4.5 x 4.5 x 2 cm
Weight (approx.)	50 g
Rated Current	10 A
Rated Voltage	250 V AC
Contact Configuration	SPST (Single Pole Single Throw)
Mounting Type	Wall-mount (standard gang box)
Terminal Type	Screw terminals
Material	Thermoplastic body, metal contacts
Color	White (typical)
Operating Temperature	-20°C to 60°C
Ingress Protection	IP20
Certifications	UL, CE, RoHS
Power Indicator	Optional pilot light (not included)
Main Functions	On/off control of lighting or appliances
Maintenance	Clean with dry soft cloth; do not use liquids
Safety	Install according to local electrical codes; disconnect power before installation
Spare Parts	None (non-serviceable)
Repairability	Not repairable; replace if faulty
General Information	Steren branded switch for residential/commercial use

Frequently Asked Questions - SEL-400 Steren

How do I install the Steren SEL-400 switch?

Turn off power at the circuit breaker. Remove old switch, connect wires to screw terminals (line to common, load to other). Tighten screws, mount in box, attach faceplate. Restore power and test.

What is the maximum load for the SEL-400?

The switch is rated for 10 A at 250 V AC, which can handle a maximum load of 2500 W for resistive loads. For inductive loads, reduce by 20%.

Can the SEL-400 be used for three-way switching?

No, the SEL-400 is a single-pole single-throw (SPST) switch. For three-way applications, you need a three-way switch like the Steren SEL-420.

Does the SEL-400 have a pilot light?

The standard SEL-400 does not include a pilot light. Some versions may have a small neon indicator, but check the packaging. If needed, consider the SEL-400L model.

What wire gauge should I use with this switch?

Use copper wire of 14 AWG to 12 AWG. Strip about 12 mm (0.5 inch) of insulation. The screw terminals accept solid or stranded wire.

Is the switch suitable for outdoor use?

No, the SEL-400 has an IP20 rating, meaning it is not protected against moisture. Use only indoors or in a weatherproof enclosure.

How do I clean the switch?

Clean with a dry soft cloth. Do not use water, solvents, or abrasive cleaners, as they may damage the plastic or cause electric shock.

What should I do if the switch feels hot?

A warm switch may indicate an overloaded circuit or loose connections. Turn off power, check load rating, and tighten terminals. If problem persists, replace the switch.

Does the SEL-400 come with a warranty?

Yes, Steren typically offers a 1-year limited warranty against defects. Keep your receipt and contact Steren support for claims.

Where can I find the user manual?

The manual can be downloaded for free from notice-facile.com or the Steren website. It includes wiring diagrams and safety instructions.

USER MANUAL SEL-400 Steren

Abstract blue circular logo with horizontal stripes (no text or symbols)

STEREN

Black Siemens 3.04 drive unit with four ports and indicator lights (no visible text or symbols)

S4-B

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Front view of a black network switch device with three ports labeled 3, 4, and 5 (no text or symbols on the device body)

INSTALACIÓN

STEREN PRODUCTO EMPACADO S.A. DE C.V.

Biólogo Maximino Martínez No. 3408 Int. 3 y 4, San Salvador Xochimanca, México, D.F. 02870, RFC: SPE941215H43

ELECTRONICA STEREN DEL CENTRO, S.A. DE C.V.

Rep. del Salvador 20 A y B, Centro, 06000, México. D.F. RFC: ESC9610259N4

ELECTRONICA STEREN DE GUADALAJARA, S.A.

López Cotilla No. 51, Centro, 44100, Guadalajara, Jal. RFC: ESG810511HT6

ELECTRONICA STEREN DE MONTERREY, S.A.

Colón 130 Pte., Centro, 64000, Monterrey, N.L. RFC: ESM830202MF8

ELECTRONICA STEREN DE TIJUANA, S.A. de C.V.

Calle 2a, Juárez 7636, Centro, 22000, Tijuana, B.C.N. RFC: EST980909NU5

Abstract blue geometric logo with horizontal stripes inside a circle (no text or symbols)

STEREN

4 Channel 400W Speaker Selector Model: SEL-400

User's Manual V0809

Front view of a black STEREN brand electronic device with four ports and indicator lights (no visible text or symbols on the device body)

S4-B

Interior view of a modern living room with wooden furniture, TV, and decorative lighting (no visible text or symbols)

4 CHANNEL 400W SPEAKER SELECTOR

SEL-400

Thank you

for purchasing your new Speaker Selector. For support, shopping, and everything new at Steren, visit our website at:

www.steren.com

Before using your new Speaker Selector, please read this instruction manual to prevent any damage. Put it away in a safe place for future references.

FEATURES

The speaker selectors have been designed to let you add additional speakers around your home or office and turn them on and off without purchasing additional amplifiers. The speaker selectors have the following features:

• Ability to add up 6 speaker pairs to your amplifiers
• Left and right “commons” are isolated to work with all types of amplifiers
• Protection for amplifier and unit
• Small size to fit with any system
• No power required for operation.
• Easy installation.
• Can handle up to 100 watts amplifier power with unique protection circuitry

CONTROLS

1. Speakers 1 through 4. Press button to select desired speaker. Orange indicator will show which speakers are active.
2. Protection Switch. Press to activate impedance protection to protect your amplifier from low speaker impedance. The white indicator shows that the protection is active.

Rear panel

1. Connection from amplifier. Connect from the speaker output of your amplifier (100 watts Max).
2. Speaker Connections. Connect your speakers to these terminals

Front view of a black network switch with three ports labeled 3, 4, and 5 (no text or symbols on the device body)

INSTALLATION

• It is recommended to use 18 or 16 AWG gauge stranded wire. For runs longer than 50', 14 gauge is recommended.
• You can mix 4, 6, 8 and 16 ohm speakers.
• Since speakers have different efficiencies, more efficient speakers will sound louder than less efficient speakers. Select your speakers to have the same efficiencies (a typical measurement is 90 db/watt).
• Keep the speaker wiring from running close to AC power wiring for safety and to avoid any noise pick up.

Make sure power is turned off on your receiver or power amplifier before doing any wiring

• To make a connection, using a wire stripper, strip 3/8" of insulation from the end of the wire. To avoid short circuits and possible amplifier damage, do not strip too much insulation from the wire.
• Tightly twist the end of the wire so that there are no frayed wires.
• Push the tab and simultaneously insert the wire into the correct hole.
• Verify that there are no wire frays.

Connect the wires from the speaker output from your receiver or amplifier to SEL-400 terminals marked AMPLIFIER. Pay attention to polarity.

Next, connect the wires from each of the speakers to the corresponding connection on SEL-400.

OPERATION

• It is recommended that you select only one speaker pair in the same room you are in, for initial turn on.
• Turn on your amplifier.
• Make sure sound is coming from both speakers.

Before you turn on additional speakers, read the information below.

Protection Circuit

When you have more than one speaker pair selected (see chart on page 7).

This circuit provides additional impedance if your amplifier can't manage low impedances. In addition, the protection circuit has an electronic circuit

breaker to automatically turn off if the volume level is excessive. It will automatically reset when the overload is removed and/or the volume is reduced. Do not turn protection on when you want to listen to just one speaker pair, especially at loud levels.

Refer to your amplifier's user manual or on the rear panel of the amplifier to determine the minimal speaker impedance that your amplifier can handle.

If your amplifier can use 4 ohm loads

	4 ohms 6 ohms 8	ohms 16 ohms
Selection 1	Protection OFF Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection On Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection ON Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on 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Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection On Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protectionon Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on ProtectionOn Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection on Protection

If your amplifier can use 2 ohm loads

	4 ohms 6 ohms 8	ohms 16 ohms
Selection 1	Protection OFF Protection OFF Protection OFF Protection OFF
Selection 2	Protection OFF Protection OFF Protection OFF Protection OFF
Selection 3	Protection ON Protection OFF Protection OFF Protection OFF
Selection 4	Protection ON Protection ON Protection OFF Protection OFF

Calculating Impedance

If you want to calculate the impedance of speakers with different impedance here is how to do it.

Parallel Impedance is equal to (R1 × R2) / (R1 + R2) .

Say you had a 6 ohm and an 8 ohm speaker. The parallel impedance if you select these two speakers would be: (6 x 8) / (6+ 8) =48 / 14 = 3.4 ohms.

If the calculated impedance is less than the minimal amplifier allowed impedance, turn the PROTECTION mode on.

SPECIFICATIONS

Input: 100W max. per channel

Output: 4 speaker pairs

4 to 16 ohms impedance

Protection circuit:

Amplifier Protection: 3 ohm resistor per channel.

Unit Protection: Automatic resetting poly switch.

Wire gauge: 14 to 22 AWG

Size: 30 x 16,5 x 5 cm

Weight: 1123g

The characteristics for this selector are subject to change without notice.

STEREN

Product: 4 Channel 400W Speaker Selector

Part number: SEL-400

Brand: Steren

WARRANTY

This Steren product is warranted under normal usage against defects in workmanship and materials to the original purchaser for one year from the date of purchase.

CONDITIONS

1.- This warranty card with all the required information, invoice or purchase ticket, product box or package, and product, must be presented when warranty service is required.
2.- If the product stills on the warranty time, the company will repair it free of charge.
3.- The repairing time will not exceed 30 natural days, from the day the claim was received.
4.- Steren sell parts, components, consumables and accessories to customer, as well as warranty service, at any of the addresses mentioned later.

THIS WARRANTY IS VOID IN THE NEXT CASES:

If the product has been damaged by an accident, acts of God, mishandling, leaky batteries, failure to follow enclosed instructions, improper repair by unauthorized personnel, improper safe keeping, among others.

a) The consumer can also claim the warranty service in the purchase establishment.
b) If you lose the warranty card, we can reissue it, if you show the invoice or purchase ticket.