electrical

When your HVAC, heating or industrial systems require replacement electrical components, sourcing quality electric parts quickly becomes critical. Midwest Supply serves as your trusted electrical supply store for contractors, relays, transformers, safety switches and specialized electrical supplies that keep commercial and industrial operations running smoothly.
View Details Heat Transfer Prod 7250P-081 Pressure Switch Munchkin Water with Gasket 7250P-081  | Midwest Supply Us
$113.72 each
View Details Navien Boilers & Water Heaters 30014699A Water Pressure Sensor for CH/NCB Model  | Midwest Supply Us
$33.78 each
View Details Heat Transfer Prod 7250P-089 Switch Munchkin Thermodisc Flue ECO  | Midwest Supply Us
$65.84 each
View Details Buderus 8718600019 Pressure Sensor Water for GB142 Series  | Midwest Supply Us
$151.69 each
View Details Rinnai 805000043 Flow Switch Boiler for E110CN/CP E75CN/CP  | Midwest Supply Us
$246.58 each
View Details Heat Transfer Prod 7855P-262 Pressure Switch 7855P-262  | Midwest Supply Us
7855P-262 | Pressure Switch 7855P-262 | Heat Transfer Prod
Brand: Heat Transfer Prod
SKU: 7855P-262
$47.11 each
View Details Carlin 35741S Relay 4 Second Delay  | Midwest Supply Us
35741S | Relay 4 Second Delay | Carlin
Brand: Carlin
SKU: 35741S
$74.92 each
View Details Buderus 78191 Transformer for Condensing Gas Boilers 120 Volt  | Midwest Supply Us
$171.47 each
View Details Allanson Transformers 2275-456 Ignition Transformer 456 Aero Burners  | Midwest Supply Us
$57.88 each
View Details Carlin 98522S Flow Switch Air for EZ Gas Burner  | Midwest Supply Us
$94.03 each
View Details Buderus 7079498 Switch Blocked Vent for G124X Boilers  | Midwest Supply Us
$42.99 each
View Details Heat Transfer Prod 7250P-739 Flue Switch ECO 160 for Elite Boilers  | Midwest Supply Us
$54.30 each
View Details Heat Transfer Prod 7250P-096 Pressure Switch Munchkin Water with Blue Dot 7250P-096  | Midwest Supply Us
$113.72 each

Comprehensive Electrical Supplies Inventory

Professional contractors and facility managers need reliable access to electrical parts across multiple categories. Our extensive inventory includes components from leading manufacturers like Honeywell, ICM Controls, Mars Controls and many others that set industry standards for performance and reliability.

Contactors

Contactors control electrical power flow in HVAC equipment, refrigeration systems and industrial machinery. We stock definite purpose contactors in various pole configurations and amperage ratings from 25 to 120 amps. 

Whether you need a three-pole contactor for air conditioning applications or specialized units for specific equipment models, our electrical supply store maintains inventory for immediate shipment. Coil voltages include 24V, 120V, 208/240V and 480V to match your system requirements.

Relays

Relays provide essential switching and control functions throughout electrical systems. Our relay selection includes general purpose relays, time delay relays and equipment-specific replacement relays. From simple SPST configurations to complex DPDT switching relays, these electric components handle control circuits, fan timing, safety interlocks and countless other applications. Many HVAC systems depend on precise relay timing for proper sequencing and protection.

Transformers

Transformers step down primary voltage to usable control voltage for thermostats, relays and other low-voltage equipment. Our electrical parts inventory includes transformers rated from 40VA to higher capacities, with primary voltages spanning 120V, 208V/240V and 480V configurations. Secondary voltages typically provide 24V for control circuits. Quality transformers prevent voltage-related failures and ensure consistent system operation.

Safety Switches and Limits

Safety switches and limit controls protect equipment and personnel from hazardous conditions. This critical category of electric parts includes high temperature limits, rollout switches, pressure switches, flame rollout detectors and door interlocks. These electrical components shut down systems when unsafe conditions develop, preventing property damage and safety hazards. We stock both automatic reset and manual reset configurations depending on application requirements.

Why Choose Midwest Supply for Electrical Supplies?

Selecting the right electrical supply store impacts both project timelines and long-term system reliability. Midwest Supply combines extensive inventory depth with technical expertise to support professional contractors and facility maintenance teams. Our electrical parts come from manufacturers proven in demanding commercial and industrial environments.

When equipment fails, downtime costs money. Our commitment to maintaining stock on commonly needed electric components means you can source replacement parts quickly. From standard contactors to specialized control relays, we understand that having the right electrical supplies available when needed keeps your projects on schedule.

Order Your Electrical Components From Midwest Supply Today

Professional contractors and facility managers trust Midwest Supply as their electrical supply store for critical replacement parts. Browse our complete selection of contactors, relays, transformers and safety switches online. 

Contact us online to ask questions about our inventory and learn more about how our products can help you get ahead on your projects.

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as experts in Electrical