Product Overview

The Jack-Up One Inlet Two Outlet Terminal Block is a compact, innovative distribution connector featuring the patented "Jack-Up" captive-screw mechanism. Designed for 10–25mm² conductors, it provides a simple, reliable method for splitting one main incoming line into two branch circuits while eliminating the common problem of dropped or lost screws during installation. The jack-up design reduces wiring time by approximately 50% compared to traditional screw terminals.

Jack-Up Mechanism: 50% Faster Wiring

1. Raise the Screw: Turn the screw counterclockwise. Instead of falling out of the terminal, the screw lifts to a captive "jacked-up" position, held by the terminal housing.

2. Open Port: With the screw raised, the conductor entry port is fully open, allowing easy cable insertion.

3. Insert Conductor: Insert the stripped 10–25mm² conductor until it reaches the back stop. No screw alignment is needed.

4. Clamp: Turn the screw clockwise. The captive screw descends smoothly, clamping the conductor firmly. Cross-threading is impossible because the screw is permanently aligned.

5. Complete: The entire operation takes 5–10 seconds per terminal, compared to 15–20 seconds for traditional terminals where the screw must be removed, aligned, and restarted.

Result: 50% reduction in wiring time, zero screw loss incidents, and consistent clamping force regardless of installer experience.

product-1807-870

Technical Parameters

Parameter	Specification
Configuration	1 Inlet / 2 Outlets
Cable Range	10–25 mm² (Cu)
Strip Length	14–16 mm
Rated Voltage	690V AC
Rated Current	125A
Clamping Force	≥ 200 N per terminal
Contact Resistance	≤ 0.3 mΩ
Recommended Torque	5–7 N·m
Housing Material	PA66, UL94-V0 flame-retardant
Conductor	Tin-plated high-conductivity copper
Screw	Steel, zinc-plated, captive (jack-up design)
Mounting	35mm DIN Rail
Operating Temperature	-40°C to +105°C

FAQ: Clamping Force Concerns

Q: Does the jack-up captive screw design provide the same clamping force as a traditional terminal screw?

A: Yes. The jack-up screw uses the same thread pitch and clamping geometry as a standard terminal screw. When fully tightened to the recommended torque (5–7 N·m), it generates identical clamping force (≥ 200N). The captive mechanism only affects the screw's travel range - it does not reduce maximum clamping force. Independent pull-out tests confirm that conductors clamped in jack-up terminals withstand the same withdrawal force as those in conventional terminals.

Q: Can the jack-up screw be over-tightened?

A: The screw has a positive stop at full clamp. Using a calibrated torque wrench set to 5–7 N·m is recommended. The captive design actually reduces over-tightening risk because the screw cannot be driven past the designed clamp position.

Q: Is the jack-up mechanism suitable for high-vibration environments?

A: Yes. The captive screw, combined with the integrated spring lock washer, provides excellent vibration resistance. The screw cannot back out completely because it is retained by the housing, and the spring washer maintains consistent tension.

Q: What conductor types are compatible?

A: Solid, stranded (Class 2), and finely stranded (Class 5/6) copper conductors are all compatible. For finely stranded conductors, use of ferrules (cord end terminals) is recommended to prevent strand splay.

Applications

Residential and commercial distribution boards, metering cabinets, industrial control panels, solar combiner boxes, and any high-volume installation where wiring speed, screw retention, and consistent clamping quality are critical priorities for 10–25mm² two-circuit distribution.

product-1807-870