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QMARK Disconnect Switch: Unit-Mounted, For All MUH Heaters, 25 A, Fits 3 kW_15 kW kW - Switches for Electric Wall & Ceiling Heaters
QMARKSwitches for Electric Wall & Ceiling Heaters

QMARK Disconnect Switch: Unit-Mounted, For All MUH Heaters, 25 A, Fits 3 kW_15 kW kW

The QMARK Disconnect Switch is a unit-mounted, 3-pole disconnect switch designed for use with all MUH heaters. It features a contact rating of 30A at 600V AC and supports 600V AC, 1 or 3-phase operation. The switch…

SKU 3G-OTH-66143

Also listed as: DS 25 · DS-25

Brand
QMARK
Item
Disconnect Switch: Unit-Mounted, For All MUH Heaters, 25 A, Fits 3 kW_15 kW kW
Category
Switches for Electric Wall & Ceiling Heaters
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

QMARK
Manufacturer Part Number
DS25
Type
For All MUH Heaters, 25 A, Fits 3 kW_15 kW kW, Knob
AC
600V
Voltage
600V AC
Includes
Knob
Switch Type
3 Pole
For Use With
All MUH Heaters
Product Type
Disconnect Switch
Mounting Type
Unit-Mounted
Contact Rating
30A @ 600V AC
Voltage, Phase
600V AC, 1 or 3-phase

Technical Documents

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QMARK Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The QMARK Disconnect Switch is a unit-mounted, 3-pole disconnect switch designed for use with all MUH heaters. It features a contact rating of 30A at 600V AC and supports 600V AC, 1 or 3-phase operation. The switch includes a knob and is intended for electric wall and ceiling heaters.

Frequently Asked Questions

What is the QMARK DS25 disconnect switch used for?

The QMARK DS25 is a unit-mounted, 3-pole disconnect switch designed for all MUH electric wall and ceiling heaters. It provides a safe means to isolate power during maintenance or servicing, supporting 600V AC, 1 or 3-phase operation with a 30A contact rating.

What are the specifications of the QMARK DS25 disconnect switch?

The QMARK DS25 has a contact rating of 30A at 600V AC, supports 600V AC, 1 or 3-phase, and is a 3-pole, unit-mounted switch. It includes a knob and fits MUH heaters from 3 kW to 15 kW. The manufacturer part number is DS25.

Where to buy the QMARK DS25 disconnect switch worldwide?

3G Electric supplies the QMARK DS25 disconnect switch to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this unit-mounted switch for MUH heaters.

How to install the QMARK DS25 disconnect switch on a MUH heater?

Mount the QMARK DS25 directly on the MUH heater unit using the provided hardware. Ensure power is off, then connect the 3-pole switch per the wiring diagram for 600V AC, 1 or 3-phase. Always follow local electrical codes and the manufacturer's installation instructions.

Used in

Common applications for QMARK
Warehouse heating — QMARK MUH-Pro series suspended unit heaters for large open spaces with 208/240 V or 480 V supply.
Commercial building lobbies — QMARK CDF557RE recessed ceiling panel heaters for discreet, fan-forced heating.
Industrial workshops — QMARK MUH154 standard suspended heater for 480 V, 3-phase applications requiring high heat output.
Retail storefronts — QMARK MUH107 wall-mounted heater for 277 V, 1-phase circuits in ceiling or wall installations.
Manufacturing facilities — QMARK MUH102-PRO with integrated controls for simplified installation in multi-zone heating systems.
Office partitions — QMARK QSF2424 mounting frame for surface-mounting 54UD25 heaters in areas with limited ceiling access.

QMARK Products

3G Electric supplies QMARK switches for electric wall & ceiling heaters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
MARKEL Disconnect Switch: Unit-Mounted, 40 A, Fits 3 kW_30 kW kW, 600V AC, 1 or 3-phase, 600V AC (MPN DCS403/5100)
MARKEL
MARKEL Disconnect Switch: Unit-Mounted, 40 A, Fits 3 kW_30 kW kW, 600V AC, 1 or 3-phase, 600V AC (MPN DCS403/5100)
MARKEL Disconnect Switch: Unit-Mounted, For 49ZZ90/49ZZ92, 20 A, Fits 3 kW_5 kW kW, 600V AC, 1-phase (MPN DCS202/5100)
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MARKEL Disconnect Switch: Unit-Mounted, For 49ZZ90/49ZZ92, 20 A, Fits 3 kW_5 kW kW, 600V AC, 1-phase (MPN DCS202/5100)
MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH0341-PRO)
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MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH0341-PRO)
MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH078-PRO)
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MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH078-PRO)
MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH074-PRO)
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MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH074-PRO)
MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH0381-PRO)
QMARK
MUH-Pro includes a pre-installed disconnect switch, 24 VAC transformer and single-stage thermostat (MPN MUH0381-PRO)

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