Siemens 6ES7924-0AA00-0AB0 Terminal Block

This terminal block provides secure and organized field wiring for SIMATIC S7 systems. The Siemens 6ES7924-0AA00-0AB0 offers a 16‑position interface for discrete and analog signals. It connects directly to the front connector of S7‑300 and S7‑400 I/O modules. The screw‑type clamping mechanism ensures reliable wire retention in high‑vibration environments. Its compact design simplifies wire routing and cabinet layout management.

Mechanical Dimensions and Construction Quality

The terminal block measures 70 mm in height, 40 mm in width, and 18 mm in depth. This compact form factor saves precious space inside crowded control cabinets. Weighing only 0.05 kg, the 6ES7924-0AA00-0AB0 adds negligible weight to the connected cables. A rugged polyamide housing offers excellent resistance to impact and chemical exposure. This material also provides superior insulation properties for safe electrical operation.

Technical Specifications at a Glance

Specification	Detail
Connection Type	Screw terminal block
Number of Positions	16 (2 rows of 8)
Wire Gauge Range	0.14 – 2.5 mm² (AWG 26–14)
Rated Voltage	250 VAC / 24 VDC
Rated Current	10 A per terminal
Contact Material	Tin‑plated brass
Housing Material	Polyamide PA 66 (UL 94 V‑0)
Stripping Length	6 mm (recommended)
Screwdriver Type	0.6 x 3.5 mm flathead
Dimensions (H × W × D)	70 mm × 40 mm × 18 mm
Weight	0.05 kg
Colour	Green (standard)
Markings	Row and pin numbers (1–16)
Temperature Range	-40 °C to +100 °C
Standards	UL 1059, CSA, IEC 60947
Protection Rating	IP20 (installed)

Interface and Connectivity Features

Sixteen screw terminals accept solid or stranded wires from 0.14 to 2.5 mm². Each terminal features a captive screw that prevents loss during wiring work. The block provides two rows with eight terminals each for organized field wiring. Clear marking numbers on the housing aid in quick identification of each connection point. The terminal block mates directly with the module’s front connector via a polarised header.

Power and Electrical Characteristics

The Siemens 6ES7924-0AA00-0AB0 handles up to 10 A of continuous current per terminal. It supports rated voltages of 250 VAC or 24 VDC for diverse signal types. The contact resistance remains below 15 mΩ for consistent electrical performance. The polyamide housing provides dielectric strength exceeding 2.5 kV. This rating ensures reliable insulation against voltage transients and surges.

Internal Construction and Component Details

Each terminal uses a screw clamp mechanism with a square pressure plate for even clamping force. The brass contacts feature a tin plating to prevent corrosion and ensure good conductivity. The housing incorporates polarising keys to prevent incorrect insertion onto the module. Two side flanges secure the block firmly to the module’s connector housing. The manufacturing process uses precision moulding for consistent alignment of all terminals.

Environmental Performance and Certifications

This terminal block operates reliably from -40 °C to +100 °C in demanding industrial settings. It also withstands humidity levels from 5% to 95% without performance degradation. The 6ES7924-0AA00-0AB0 complies with UL 1059, CSA, and IEC 60947 standards. These certifications guarantee safe installation in global automation applications.