Feed-through terminal block, PUSH IN, blue, 1.5 mm², 17.5 A, 500 V, number of connections: 2, A2C 1.5 BL 1552820000

Fast installation in industrial switchgear

The PUSH IN feed-through terminal block with a cross-section of 1.5 mm² and a current rating of 17.5 A at 500 V is a compact solution for routing power, signals, and data in electrical installations and control cabinets. A width of only 3.5 mm allows for dense packing of components on the TS35 DIN rail - a significant advantage when designing switchgear with limited space.

PUSH IN technology eliminates the need for tools when connecting solid conductors - simply insert the wire into the opening, and the spring mechanism automatically ensures stable contact with constant clamping force. Multi-wire and flexible conductors require the prior application of wire end ferrules (e.g., H1/10 or H1.5/10) - these can also be connected without tools by pushing the wire directly into the terminal.

The housing is made of Wemid plastic (flammability class UL 94 V-0) which is resistant to high temperatures - the block operates continuously from −60°C to +130°C.

Electrical parameters and connection durability

The rated current of 17.5 A at a cross-section of 1.5 mm² provides an optimal balance between performance and size - such a selection is frequently encountered in control circuits for machines and auxiliary devices. A contact resistance of 1.83 mΩ (measured according to IEC 60947-7-x) means minimal energy loss at the terminal itself; under full load, the block generates a power loss of approximately 0.56 W, a value easily dissipated by the housing even in dense configurations.

The contact is made of hardened tin-plated copper-coated steel - this combination ensures both mechanical contact durability during repeated insertion/removal of wires and the low electrical resistance characteristic of copper.

For applications requiring precise measurement or minimal voltage drops, the surge voltage rating of 6 kV is also important - the block can handle short-term overvoltages characteristic of category III industrial installations (pollution degree 3).

Certificates and Ex zone approvals

The product holds ATEX (TUEV16ATEX7909U) and IECEx (IECEXTUR16.0036U) approvals, allowing its use in gas explosion hazard zones - the Ex eb II C Gb designation according to the EN 60079-7 standard indicates enhanced housing tightness protecting against internal contact sparking.

Additional certificates include:

• cURus / cURusEX - US and Canadian approvals,
• CSA - Canadian approval,
• CCC Ex - Chinese certificate for Ex devices,
• DNV GL / DNV - marine acceptance,
• UKCA Ex / UKEX - British post-Brexit requirements,
• Confirmation of compliance with the EN 45545-2 railway standard (rolling stock).

For installers working on export projects or specialized applications (offshore, petrochemical, railway), having such a wide portfolio of certificates significantly simplifies component selection - one type of block covers most international legal requirements.

Mounting and system compatibility

The block is mounted on the TS35 DIN rail by snapping it in from the top - the latch automatically locks the position without additional mounting elements or side screws ("gerastet"). The right side remains open (the left must be closed with an end plate), allowing the set to be expanded with additional blocks of the same type.

Dedicated accessories are available to extend functionality:

• ZQV cross-connectors - allow for rapid equipotential connection between adjacent blocks without additional wiring,
• End Plate - required to close the terminal strip,
• PS / PS-TEST PLUGS - enable circuit parameter measurement without disconnecting wires,
• MM/MultiMark markers / labels - for describing block functions for cabinet documentation.

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