OKW Electronics, Inc. - Bridgeville, PA
Distributor
ISO 9001:2000 certified distributor of a wide range of PCB terminal blocks. Single part & two-part plug & header designs, standard, low & ultra low profile terminal blocks, screwless terminal blocks, double & triple levels terminal blocks, flanged terminal blocks for screw mounting to PCBs, terminal blocks with 45 degrees wire entry & high current & very high power terminal blocks. Ratings from 4A to 57A. Pitches from 3.50 mm to 10.16 mm. Wire gauges from 18 AWG to 8 AWG. UL, CUL, VDE, CE & IMQ approved. RoHS WEEE & REACH compliant.
www.okwelectronics.com/pcb_terminal_blocks....

Penn Radiant Products - Verona, PA
Distributor
Distributor of gas-fired heater parts including terminal blocks. Terminal blocks are available in (A/C), C & D types. Other gas-fired heater parts such as control relays, DSI controls, high-limit switches, motor relays, breakers, ON/OFF switches, thermostats & power cords are also available.
Brand Names: Heat Wagon, Sure Flame
pennradiantproducts.thomasnet.com/category/...

KOM Lamb, Inc. - Erie, PA
Distributor, Manufacturers' Rep, Service Company
Distributor & rep. of electric counters & heaters.
Brand Names: Weidmuller

Reznor - Mercer, PA
Manufacturer
Manufacturer of furnaces, heating equip. & supplies, heaters.

Control Concepts Corporation - Beaver, PA
Manufacturer
IEC DIN Rail Mounting Terminal Blocks In Single Feed Through Screw Clamp, Spring/Cage Clamp, Triple & Double Level High Density, Sensor, Fuse Holder, Disconnect & Accessories

Intek Products - Warrendale, PA
Distributor
Distributor of actuators.
Brand Names: Wago

Service Electrical Supply Co. - Pittsburgh, PA
Distributor, Custom Manufacturer, Service Company
Custom sized; authorized stocking Distributor Ideal, Buchanan, Burndy
Brand Names: Buchanan, Ideal

Spectrum Control, Inc. - Fairview, PA
Manufacturer, Custom Manufacturer
EMI/RFI Filters & Connector Components

Thomas & Betts Corp. - Mercer, PA
Manufacturer, Custom Manufacturer
Manufacturer of furnaces, heating equip. & supplies, heaters.

Spectrum Advanced Specialty Products - Fairview, PA
Manufacturer, Custom Manufacturer
Six Sigma capable, ISO 9001:2008 certified manufacturer of standard & custom filtered terminal blocks. Barrier strip filtered terminal blocks & PCB mounted filtered terminal blocks are available. PCB mounted filtered terminal blocks are available in 2,500 pF capacitance rating & 707 VDC dielectric withstanding voltage. Barrier strip filtered terminal blocks range in capacitance ratings from 2,500 pF to 5,200 pF. Capabilities include electromagnetic simulation, performance/compliance testing, EMC testing, design engineering, modeling & prototyping. Filtered terminal blocks are RoHS compliant.

Eaton Corp., Cutler-Hammer Group - Moon Township, PA
Manufacturer, Custom Manufacturer
Manufacturer of electrical control.

FL Industries, Inc. - Mercer, PA
Manufacturer
Manufacturer of furnaces, heating equip. & supplies, heaters.

O.B.O. Bettermann Of North America, Inc. - Ambridge, PA
Manufacturer
Manufacturer Of Cable Support Systems. Cable Trays, Surface Raveways, Connection & Fastening Systems & Overvoltage/Surge Protection Systems

Mencini, F.C. & Associates, Inc. - Cranberry Township, PA
Distributor, Service Company
Distributor & service of din rail mounted, power & control, build to order rail assemblies. Stocking electrical distributor: Weidmuller, Buchanan

Grant Industrial Controls, Inc. - Pittsburgh, PA
Distributor
Sensor, spring cage, fusible; stocking Distributor Phoenix Contact, Square D, IEC
Brand Names: Square D

Pittsburgh Industrial Controls, Inc. - Cranberry Township, PA
Distributor, Service Company
Distributor & service of din rail mounted, power & control, build to order rail assemblies.
Brand Names: Weidmuller

Geotronix, Inc. - Pittsburgh, PA
Manufacturers' Rep
Rep. Of Electronic Equipment, Supplies & Components, Name Plates, Overlays
Brand Names: Jolo