20-pin Terminal Blocks: BMX FTB 20•0

At a Glance

There are three types of 20-pin terminal blocks:

BMX FTB 2010 screw clamp terminal blocks
BMX FTB 2000 caged terminal blocks
BMX FTB 2020 spring terminal blocks

Cable Ends and Contacts

Each terminal block can accommodate:

Bare wires
Wires with:
- DZ5-CE (ferrule) type cable ends:
- AZ5-DE (twin ferrule) type cable ends:

NOTE: When using stranded cable, Schneider Electric strongly recommends the use of wire ferrules which are fitted with an appropriate crimping tool.

Description of the 20-pin Terminal Blocks

The following table describes the type of wires that fit each terminal block and the associated gauge range, wiring constraints, and tightening torque:

	Screw Clamp Terminal Blocks BMX FTB 2010	Caged Terminal Blocks BMX FTB 2000	Spring Terminal Blocks BMX FTB 2020
Illustration
1 solid conductor	AWG: 22...16 mm²: 0.34...1.5	AWG: 22...18 mm²: 0.34...1	AWG: 22...18 mm²: 0.34...1
2 solid conductors	2 conductors of the same size: AWG: 2 x 22...16 mm²: 2 x 0.34...1.5	Only possible with twin ferrule: AWG: 2 x 24...20 mm²: 2 x 0.24...0.75	Only possible with twin ferrule: AWG: 2 x 24...20 mm²: 2 x 0.24...0.75
1 stranded cable	AWG: 22...16 mm²: 0.34...1.5	AWG: 22...18 mm²: 0.34...1	AWG: 22...18 mm²: 0.34...1
2 stranded cables	2 conductors of the same size: AWG: 2 x 22...16 mm²: 2 x 0.34...1.5	Only possible with twin ferrule: AWG: 2 x 24...20 mm²: 2 x 0.24...0.75	Only possible with twin ferrule: AWG: 2 x 24...20 mm²: 2 x 0.24...0.75
1 stranded cable with ferrule	AWG: 22...16 mm²: 0.34...1.5	AWG: 22...18 mm²: 0.34...1	AWG: 22...18 mm²: 0.34...1
2 stranded cables with twin ferrule	AWG: 2 x 24...18 mm²: 2 x 0.24...1	AWG: 2 x 24...20 mm²: 2 x 0.24...0.75	AWG: 2 x 24...20 mm²: 2 x 0.24...0.75
Minimum individual wire size in stranded cables when a ferrule is not used	AWG: 30 mm²: 0.0507	AWG: 30 mm²: 0.0507	AWG: 30 mm²: 0.0507
Wiring constraints	Screw clamps have slots that accept: Flat-tipped screwdrivers with a diameter of 5 mm. Pozidriv PZ1 or Philips PH1 cross-tipped screwdrivers. Screw clamp terminal blocks have captive screws. On the supplied blocks, these screws are not tightened.	Caged terminal blocks have slots that accept: Flat-tipped screwdrivers with a diameter of 3 mm. Caged terminal blocks have captive screws. On the supplied blocks, these screws are not tightened.	The wires are connected by pressing the button located next to each pin. To press the button, use a flat-tipped screwdriver with a maximum diameter of 3 mm.
Screw tightening torque	0.5 N•m (0.37 lbf-ft)	0.4 N•m (0.30 lbf-ft)	Not applicable

Connection of 20-pin Terminal Blocks

DANGER

HAZARD OF ELECTRIC SHOCK

Turn off all power to sensor and pre-actuator devices before connection or disconnection of the terminal block.

Failure to follow these instructions will result in death or serious injury.

NOTE: The connection cable is installed and held in place by a cable clamp positioned below the 20-pin terminal block.

Labeling of 20-pin Terminal Blocks

Labels for the 20-pin terminal blocks are supplied with the module. They are to be inserted in the terminal block cover by the customer.

Each label has two sides:

One side that is visible from the outside when the cover is closed. This side features the commercial product references, an abbreviated description of the module, as well as a blank section for customer labeling.
One side that is visible from the inside when the cover is open. This side shows the terminal block connection diagram.