Terminal Blocks & Connectors

Terminal blocks and connectors are essential components for creating secure, organized, and reliable electrical connections across industrial, commercial, and automation environments. Terminal blocks are commonly used to connect two or more conductors while maintaining clean wire routing and efficient current distribution. Each electrical terminal block provides a dedicated termination point that simplifies installation, inspection, and long-term maintenance within control panels, machinery, and building systems.

Available in screw, spring clamp, and push-in styles, terminal blocks offer flexibility for different wiring preferences and conductor types. Terminal block connector designs maintain consistent contact pressure, support vibration resistance, and reduce the risk of loose connections. In addition to fixed terminal blocks, connector block solutions and electrical connectors enable removable or pluggable connections, supporting modular system design and simplified servicing. From PCB-mounted terminal blocks to high-voltage and barrier-style connectors, terminal blocks and connectors form the backbone of safe, serviceable electrical wiring systems.

Found 4515 items
Normally In Stock
Phoenix Contact 3044128 Protective conductor terminal block UT 4-PE
Free U.S Ground shipping
$4.67
$3.89
Normally In Stock
Phoenix Contact 3044102 Feed-through terminal block UT 4
Free U.S Ground shipping
$1.18
$0.98
Normally In Stock
Phoenix Contact 3045130 Feed-through terminal block UT 4 WH
Free U.S Ground shipping
$1.39
$1.16
Normally In Stock
Phoenix Contact 3045143 Feed-through terminal block UT 4 BK
Free U.S Ground shipping
$1.32
$1.10
Normally In Stock
Phoenix Contact 0921037 Fuse plug ST-SILED 24-UK 4
Free U.S Ground shipping
$19.70
$16.42
Normally In Stock
Phoenix Contact 3046090 Fuse modular terminal block UT 4-HESILED 24 (5X20)
Free U.S Ground shipping
$10.43
$8.69
Normally In Stock
Phoenix Contact 3046100 Fuse modular terminal block UT 4-HESILA 250 (5X20)
Free U.S Ground shipping
$10.67
$8.89
Normally In Stock
Phoenix Contact 3044115 Feed-through terminal block UT 4 BU
Free U.S Ground shipping
$1.25
$1.04
Normally In Stock
Phoenix Contact 3118203 Fuse modular terminal block UK 6-FSI/C
Free U.S Ground shipping
$13.00
$10.83
Normally In Stock
Phoenix Contact 3214368 Fuse modular terminal block UT 4-L/HESILA 250 (5X20)
Free U.S Ground shipping
$13.63
$11.36
Normally In Stock
Phoenix Contact 3044597 Protective conductor terminal block UT 4-QUATTRO-PE
Free U.S Ground shipping
$7.25
$6.04
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Phoenix Contact 3044076 Feed-through terminal block UT 2,5
Free U.S Ground shipping
$1.16
$0.97
Normally In Stock
Phoenix Contact 3044814 Double-level terminal block UTTB 4
Free U.S Ground shipping
$3.28
$2.73
Normally In Stock
Phoenix Contact 3045127 Feed-through terminal block UT 4 RD
Free U.S Ground shipping
$1.32
$1.10
Normally In Stock
Phoenix Contact 3044131 Feed-through terminal block UT 6
Free U.S Ground shipping
$1.64
$1.37
Normally In Stock
Phoenix Contact 3045224 Feed-through terminal block UT 4 BN
Free U.S Ground shipping
$1.32
$1.10
Normally In Stock
Phoenix Contact 3209510 Feed-through terminal block PT 2,5
Free U.S Ground shipping
$1.70
$1.42
Normally In Stock
Phoenix Contact 3011054 Initiator/actuator terminal block DOKD 1,5-TG
Free U.S Ground shipping
$14.18
$11.82
Normally In Stock
Phoenix Contact 3214325 Fuse modular terminal block UT 4-L/HESI (5X20)
Free U.S Ground shipping
$9.73
$8.11
Normally In Stock
Phoenix Contact 3046032 Fuse modular terminal block UT 4-HESI (5X20)
Free U.S Ground shipping
$6.47
$5.39
Normally In Stock
Phoenix Contact 3046278 Knife-disconnect terminal block UT 4-MT BU
Free U.S Ground shipping
$4.22
$3.52
Normally In Stock
Phoenix Contact 3044157 Protective conductor terminal block UT 6-PE
Free U.S Ground shipping
$5.34
$4.45
Normally In Stock
Phoenix Contact 3044636 Double-level terminal block UTTB 2,5
Free U.S Ground shipping
$3.19
$2.66
Normally In Stock
Phoenix Contact 3046430 Fuse modular terminal block UT 6-HESILA 250 (6,3X32)
Free U.S Ground shipping
$15.35
$12.79
Normally In Stock
Phoenix Contact 3044144 Feed-through terminal block UT 6 BU
Free U.S Ground shipping
$1.64
$1.37
Normally In Stock
Phoenix Contact 3214259 Multi-level terminal block UT 2,5-3L
Free U.S Ground shipping
$5.83
$4.86
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Phoenix Contact 3044720 Disconnect terminal block UTTB 4-TG
Free U.S Ground shipping
$6.44
$5.37
Normally In Stock
Phoenix Contact 3046184 Feed-through terminal block UT 4-MTD
Free U.S Ground shipping
$1.33
$1.11
Normally In Stock
Phoenix Contact 3270541 Service connector LPS-6
Free U.S Ground shipping
$10.36
$8.63
Normally In Stock
Phoenix Contact 3044092 Protective conductor terminal block UT 2,5-PE
Free U.S Ground shipping
$4.22
$3.52
Normally In Stock
Phoenix Contact 0921053 Fuse plug ST-SILA250-UK 4
Free U.S Ground shipping
$14.44
$12.03
Normally In Stock
Phoenix Contact 3036819 Fuse plug P-FU 5X20 LED 24
Free U.S Ground shipping
$12.67
$10.56
Normally In Stock
Phoenix Contact 3044160 Feed-through terminal block UT 10
Free U.S Ground shipping
$2.33
$1.94
Normally In Stock
Phoenix Contact 0921011 Fuse plug ST-SI-UK 4
Free U.S Ground shipping
$5.28
$4.40
Normally In Stock
Phoenix Contact 3045062 Feed-through terminal block UT 2,5 RD
Free U.S Ground shipping
$1.24
$1.03
Normally In Stock
Phoenix Contact 3045198 Feed-through terminal block UT 6 WH
Free U.S Ground shipping
$1.75
$1.46
Normally In Stock
Phoenix Contact 3045208 Feed-through terminal block UT 6 BK
Free U.S Ground shipping
$1.75
$1.46
Normally In Stock
Phoenix Contact 3209578 Feed-through terminal block PT 2,5-QUATTRO
Free U.S Ground shipping
$2.64
$2.20
Normally In Stock
Phoenix Contact 2774237 Initiator/actuator terminal block DIKD 1,5-TG
Free U.S Ground shipping
$13.27
$11.06
Normally In Stock
Phoenix Contact 3045156 Feed-through terminal block UT 4 GN
Free U.S Ground shipping
$1.32
$1.10
Normally In Stock
Phoenix Contact 3044571 Feed-through terminal block UT 4-QUATTRO
Free U.S Ground shipping
$2.54
$2.12
Normally In Stock
Phoenix Contact 3044775 Knife-disconnect terminal block UTTB 4-MT
Free U.S Ground shipping
$8.16
$6.80
Normally In Stock
Phoenix Contact 3045088 Feed-through terminal block UT 2,5 BK
Free U.S Ground shipping
$1.24
$1.03
Normally In Stock
Phoenix Contact 3045075 Feed-through terminal block UT 2,5 WH
Free U.S Ground shipping
$1.24
$1.03
Normally In Stock
Phoenix Contact 0441504 Protective conductor terminal block USLKG 5
Free U.S Ground shipping
$11.96
$9.97

FAQs

Q: What are terminal blocks designed for?
Terminal blocks are designed to securely terminate and organize electrical conductors without splicing. An electrical terminal block creates a reliable connection point that improves wiring clarity, safety, and maintainability in control and power systems.

Q: What is the difference between a terminal block connector and a connector block?
A terminal block connector typically refers to a fixed connection point used to terminate conductors, while a connector block often describes a removable or pluggable connection that allows devices or circuits to be disconnected without rewiring.

Q: What is the difference between screw, spring, and push-in terminal blocks?
Screw terminal blocks use mechanical tightening to secure conductors, spring clamp terminal blocks maintain constant pressure without screws, and push-in terminal blocks allow direct conductor insertion without tools for faster installation.

Q: Where are PCB terminal blocks commonly used?
PCB terminal blocks are used on circuit boards in applications such as power supplies, motor drives, control electronics, and automation equipment where direct wire-to-board connections are required.

Q: Are terminal blocks suitable for industrial environments?
Yes, terminal blocks are designed to withstand vibration, temperature variation, and electrical loads commonly found in industrial control panels, automation systems, and commercial installations.

Why Buy Terminal Blocks & Connectors from RSP Supply

RSP Supply offers a broad selection of terminal blocks and connectors designed for secure wiring, reliable performance, and efficient panel organization. Customers rely on RSP Supply for access to proven connection solutions that integrate seamlessly into industrial, commercial, and automation systems.