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QMARK Manual Limit Switch 4520-2027-000 - Replacement HVACR Controls, Switches & Thermostats
QMARKReplacement HVACR Controls, Switches & Thermostats

QMARK Manual Limit Switch 4520-2027-000

QMARK Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Manual Limit.

SKU 3G-OTH-79807

Also listed as: 45202027000 · 4520 2027 000

Brand
QMARK
Item
Manual Limit Switch 4520-2027-000
Category
Replacement HVACR Controls, Switches & Thermostats
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

QMARK
Manufacturer Part Number
4520-2027-000
Product Type
Manual Limit

Technical Documents

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

Product Description

QMARK Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Manual Limit.

Frequently Asked Questions

What is a QMARK manual limit switch used for?

A QMARK manual limit switch is a safety device used in HVACR systems to interrupt power when temperatures exceed safe limits. It protects heating equipment from overheating by requiring manual reset after a trip, ensuring reliable operation in commercial and industrial environments.

What are the specifications of the QMARK 4520-2027-000 manual limit?

The QMARK 4520-2027-000 is a manual limit switch for HVACR controls. Its key specification is the manufacturer part number 4520-2027-000 and product type as manual limit. For detailed electrical ratings or temperature thresholds, consult the OEM datasheet or contact 3G Electric for technical support.

Where to buy QMARK 4520-2027-000 manual limit worldwide?

3G Electric supplies the QMARK 4520-2027-000 manual limit switch 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 replacement HVACR control component.

How to install a QMARK manual limit switch?

To install a QMARK manual limit switch, first disconnect power to the HVACR system. Mount the switch securely in the designated location, typically near the heat exchanger. Connect wiring per the manufacturer's diagram, ensuring proper polarity. After installation, test the manual reset function before restoring power.

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 replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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