Dual-Row Barrier Terminal Block Connector
Double-row barrier terminal blocks with screw terminals on both sides of the base. Barrier walls isolate every pole, giving compact, safe, point-to-point wiring for control panels and equipment.
Dual-Row Barrier Terminal Block Connector
Double-row barrier terminal blocks with screw terminals on both sides of the base. Barrier walls isolate every pole, giving compact, safe, point-to-point wiring for control panels and equipment.
Variants 7
Technical Specifications
| Rows | Dual (double-row) |
| Number of Poles | 2 to 24 |
| Current Rating | 15A to 30A |
| Voltage Rating | 300V / 600V |
| Wire Range | 0.5mm² to 4mm² (22–12 AWG) |
| Pitch | 7.62mm / 9.5mm / 11mm |
| Screw Size | M3 / M3.5 / M4 |
| Contact Material | Brass, nickel-plated |
| Housing Material | PBT / PA66 (UL94 V-0) |
| Operating Temperature | -40°C to +105°C |
| Mounting | Through-hole base mount |
Key Features
- Double-row design — two screw terminals per pole, one on each side
- Molded barrier walls between every pole prevent short circuits
- Available in 2 to 24 pole configurations
- Captive screws with pressure plates — no lost hardware during wiring
- Accepts bare wire, ring and fork lugs
- Flame-retardant UL94 V-0 rated housing
- Through-hole base mounting for chassis and panel installation
- Optional jumper links, marker strips and transparent covers
Applications
- Control panels and junction boxes
- Power supply and SMPS terminations
- HVAC and refrigeration equipment
- Lighting control and distribution
- Industrial machinery and OEM equipment
- Inverter, UPS and battery charger wiring
Dual-Row Barrier Terminal Blocks
Unison Connectors manufactures dual-row barrier terminal block connectors for reliable point-to-point wiring in control panels, power supplies and industrial equipment. Each pole has two screw terminals, one on either side of the block, connected by a single conductive strip. Incoming and outgoing wires land on opposite sides of the same pole, which keeps the wiring neat and easy to trace.
Raised barrier walls separate adjacent poles, so stray wire strands or a loose lug cannot bridge two circuits.
Why Choose Dual-Row Barrier Terminals?
- Clear field/equipment separation - Field wiring on one side, internal wiring on the other
- Barrier isolation - Molded walls between poles increase creepage and prevent accidental shorts
- Compact footprint - Two connection points per pole in a single block saves panel space
- Easy maintenance - Screw terminals can be re-tightened or rewired without special tools
- Lug-friendly - Pressure plates accept bare conductors, ring and fork terminals
Construction Details
- Housing - Flame-retardant PBT or glass-filled nylon (PA66) rated UL94 V-0 for high dielectric strength and heat resistance
- Contact strip - Brass with nickel plating for low contact resistance and corrosion protection
- Screws - Nickel-plated steel captive screws with square pressure plates
- Markings - Pole numbers molded or printed on the housing for easy circuit identification
Available Configurations
| Series | Pitch | Current | Voltage | Wire Size | Screw | Poles |
|---|---|---|---|---|---|---|
| DB-762 | 7.62mm | 15A | 300V | 0.5–1.5mm² | M3 | 2–24 |
| DB-950 | 9.5mm | 20A | 300V | 0.5–2.5mm² | M3.5 | 2–24 |
| DB-1100 | 11mm | 30A | 600V | 1.0–4mm² | M4 | 2–20 |
Custom pole counts, colours and pitches are available on request for OEM volumes.
Accessories
- Transparent snap-on covers for finger protection
- Jumper links for commoning adjacent poles
- Marker strips for circuit identification
- Mounting screws and spacers