Terminal Blocks

Terminal blocks are essential components used to safely and efficiently connect electrical conductors in control panels, industrial automation systems, and power distribution applications. By providing a secure termination point for field wiring, terminal blocks help organize complex wiring layouts while reducing the risk of loose connections, signal loss, or electrical faults. Their modular design supports clean, serviceable installations in control cabinets and junction boxes.

Available in multiple connection technologies, including screw, spring clamp, and push-in. terminal blocks can be selected to match installation preferences and application requirements. Screw terminal blocks offer a traditional, robust connection method, while spring and push-in styles support faster wiring with consistent contact pressure. Terminal blocks are designed to accommodate a wide range of wire sizes and conductor cross-sections, supporting both low-voltage signal wiring and high-current power applications. Terminal blocks are commonly mounted on DIN rails or fixed to mounting plates, allowing flexible configuration and easy expansion. While PCB terminal blocks and terminal block connectors are used to interface directly with circuit boards, traditional terminal blocks remain critical for field wiring and panel-level connections. RSP Supply carries terminal blocks from trusted manufacturers including Eaton, IDEC, Phoenix Contact, Schneider Electric, and Weidmüller to support reliable performance across industrial systems.

Found 5710 items
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Found 5710 items
Manufacturer
Eaton (107)
IDEC (102)
Phoenix Contact (4400)
Schneider Electric (203)
Weidmuller (898)
Component
Branch Terminal (2)
Connecting Nut (1)
Din Rail (1)
Din Rail Bracket (2)
DIN Rail End Clip (4)
DIN Removal Tool (1)
DIN-Rail (1)
Dust Cover (7)
End Cover (1)
End Plate (4)
Sub Component
Basic Terminal Block (13)
Bolt Connection Terminal Block (95)
Component Plug Terminal Block (14)
Component Terminal Block (104)
Connection Terminal Block (18)
Control Voltage Distribution (63)
Device Terminal Block (19)
Disconnect Terminal Block (274)
Distance Terminal (1)
Distributor Terminal Block (1101)
Terminal Block Component Color
Agate Gray (4)
Beige (12)
Beige/Yellow (22)
Black (691)
Black/Orange (8)
Black/Yellow (116)
Blue (680)
Blue/Black (1)
Blue/White (2)
Brown (126)
Terminal Block Number of Levels
1 (3155)
2 (569)
3 (163)
4 (29)
8 (13)
16 (4)
Jumper Pitch
0 mm (5)
5 mm (2)
5.2 mm (4)
6 mm (5)
6.2 mm (1)
7.5 mm (1)
8.2 mm (25)
9 mm (1)
12 mm (1)
12.4 mm (2)
Terminal Block Voltage Rating
12 Volt (4)
24 Volt (58)
28 Volt (2)
30 Volt (3)
36 Volt (19)
48 Volt (3)
60 Volt (18)
63 Volt (2)
70 Volt (14)
72 Volt (3)
Terminal Block Amperage
0.05 Amp (2)
0.5 Amp (47)
1 Amp (13)
1.5 Amp (10)
4 Amp (2)
5 Amp (5)
6 Amp (11)
6.3 Amp (166)
8 Amp (65)
9 Amp (7)
Terminal Block Width
3.5 mm (217)
4.1 mm (2)
4.2 mm (60)
4.5 mm (1)
4.15 mm (5)
5 mm (5)
5.1 mm (258)
5.2 mm (725)
5.3 mm (5)
5.08 mm (46)
Terminal Block Number of Connections
1 (187)
2 (1622)
3 (523)
4 (963)
5 (129)
6 (336)
7 (199)
8 (85)
9 (17)
10 (41)
Terminal Block Max Wire Size
1 (1)
1/0 AWG (1)
2 (49)
3 (3)
4 (56)
4 AWG (1)
6 (89)
6 AWG (1)
8 (139)
10 (709)
Terminal Block Min Wire Size
1 (1)
2 (10)
3 (1)
4 (37)
6 (14)
8 (28)
10 (4)
12 (21)
14 (9)
16 (42)
Jumper Number of Positions
1 (13)
2 (26)
3 (5)
4 (21)
5 (2)
6 (2)
12 (2)
15 (1)
Terminal Block Connection Method
Bolt Connection (94)
Crimp Connection (2)
DIN Rail (10)
Fast Connection (7)
Front Screw Connection (18)
Leg Spring Connection (3)
Panel (6)
Plug Connection (140)
Power-Turn Connection (60)
Push X Connection (3)
Terminal Block Diode
With Diode (44)
Terminal Block Disconnect
Knife Disconnect (168)
Lever-Type Disconnect (4)
Removable Disconnect (117)
Terminal Block Fuse Type
.25" X 1.24" (1)
3 X 32 (22)
5Mm X 20Mm (9)
10:3 X 38 mm (4)
C (9)
Class CC (8)
D 01 - E 14 (1)
D 02 - E 18 (1)
D II - E 27 (1)
G - 5 X 20 (77)
Terminal Block Fused
Fused (183)
Not Fused (2610)
Terminal Block Grounded
Grounded (294)
Not Grounded (2517)
Terminal Block Indication
12V LED Indicator (13)
24V LED Indicator (24)
48V LED Indicator (11)
120V LED Indicator (9)
230V LED Indicator (9)
LED (70)
LED Indicator (1)
No Indicator (2766)
Terminal Block With Test Disconnects
With Test Disconnects (3)
With Test Socket Screws (76)
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
Normally In Stock
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 3046032 Fuse modular terminal block UT 4-HESI (5X20)
Free U.S Ground shipping
$6.47
$5.39
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 3209510 Feed-through terminal block PT 2,5
Free U.S Ground shipping
$1.70
$1.42
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 3044157 Protective conductor terminal block UT 6-PE
Free U.S Ground shipping
$5.34
$4.45
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 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 3270541 Service connector LPS-6
Free U.S Ground shipping
$10.36
$8.63
Normally In Stock
Phoenix Contact 3214259 Multi-level terminal block UT 2,5-3L
Free U.S Ground shipping
$5.83
$4.86
Normally In Stock
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 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 3044160 Feed-through terminal block UT 10
Free U.S Ground shipping
$2.33
$1.94
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 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 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 3209578 Feed-through terminal block PT 2,5-QUATTRO
Free U.S Ground shipping
$2.64
$2.20
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 3004171 Fuse modular terminal block UK 6,3-HESI
Free U.S Ground shipping
$15.44
$12.87

FAQs

Q: What are terminal blocks used for?
Terminal blocks are used to connect, organize, and manage electrical wires in control panels, automation systems, and power distribution equipment.

Q: What types of terminal block connection technologies are available?
Common connection types include screw clamp, spring clamp, and push-in terminal blocks, each offering different installation and performance benefits.

Q: Are terminal blocks suitable for high-current applications?
Yes, many terminal blocks are designed to handle high-current and power distribution applications, depending on their rating and construction.

Q: How are terminal blocks mounted?
Terminal blocks are typically mounted on DIN rails or secured to mounting plates inside control panels and junction boxes.

Q: Which manufacturers of terminal blocks does RSP Supply offer?
RSP Supply offers terminal blocks from trusted manufacturers including Eaton, IDEC, Phoenix Contact, Schneider Electric, and Weidmüller.

Why Buy Terminal Blocks from RSP Supply

RSP Supply offers a comprehensive selection of terminal blocks designed for secure, organized, and reliable wire connections in industrial systems. Our product lineup from leading manufacturers supports efficient panel design, long-term performance, and dependable operation across automation and distribution applications.