A9L612301 Schneider Surge Protection Device

A9L612301 is a pluggable Type T1+T2 Surge Protection Device (SPD) of the iPRF1 12.5r 3P model under Schneider‘s Acti9 series. It features both Class I and Class II test classifications with 3 Stangen, making it suitable for lightning and surge protection in three-phase distribution systems. It supports remote status indication and enables convenient installation and maintenance. Below is a detailed explanation of its core parameters, installation key points, replacement selection, and troubleshooting:

Product Features & Anwendungsszenarien

1. Product Features

Integrated Protection: T1+T2 composite protection eliminates the need for additional graded SPDs, saving space and cost.

Pluggable Design: The module supports hot plugging and unplugging under live conditions, enabling quick replacement in case of failure without affecting the power supply of the main circuit.

Visual Status Indication: Built-in remote indication contact can be connected to the monitoring system to feed back the operating status of the SPD in real time, facilitating operation and maintenance.

Safe and Reliable: Built-in thermal trip and overcurrent protection prevent short-circuit risks caused by SPD faults.

2. Anwendungsszenarien

It is applicable to the incoming ends of three-phase distribution systems or the front ends of important equipment in industrial plants, commercial buildings, Rechenzentren, usw., protecting electrical equipment from damage caused by direct lightning strikes, induced lightning, and operating overvoltage.

Key Installation & Wiring Points

1. Installation Preparation

Confirm the installation position on a 35mm standard DIN rail, reserve sufficient heat dissipation space, and avoid close proximity to heating elements.

Verify the matching of system voltage, frequency and SPD parameters; Uc shall be higher than the maximum operating voltage of the system.

2. Verkabelungsspezifikationen

The incoming end is connected to the power supply side, and the outgoing end to the load side; L1, L2 and L3 correspond to the three-phase live wires, and PE shall be reliably earthed.

The wire diameter of the connecting conductor shall be no less than 16mm² copper core wire, and the length shall be as short as possible (≤50cm) to reduce the impact of wire resistance on protection performance.

The remote indication contact is connected to the monitoring circuit, with the rated current not exceeding AC 12 6A/240V and DC 12 2A/48V.

3. Notizen

It shall be used in conjunction with a backup protection circuit breaker; the rated current of the circuit breaker is recommended to be 16A 32A to avoid selective tripping caused by SPD faults.

Fehlerbehebung & Maintenance

Cross-brand Replacement Selection

For replacement of this model, the following products of the same grade can be referred to. Ensure the consistency of key parameters during replacement:

1. ABB: OVR T1+T2 20 350 3P, In=20kA, Imax=50kA, Uc=350V, 3P, with remote indication.
2. Siemens: 5SD7432 0, Type T1+T2, In=20kA, Imax=50kA, Uc=350V, 3P, suitable for standard DIN rail.
3. Schneider same-series replacement: A9L16633 (iPRF1 12.5r 3P, with remote indication), which is completely consistent in function with A9L612301 and can be directly interchanged.

Auswahl & Procurement Suggestions

1. Confirm that the system is a three-phase distribution system; for a 3P+N system, A9L16634 (iPRF1 12.5r 3P+N) is optional.
2. Check the product batch number and anti-counterfeiting mark during procurement to ensure genuine Schneider original products and avoid the impact of counterfeit products on protection performance.
3. For bulk procurement, consult authorized Schneider distributors to obtain better prices and technical support.

Parameter Comparison Between A9L612301 and A9L16633 (Core Conclusion: Fully consistent in function, can be directly interchanged)

Same-series 3P+N Model Replacement Adaptation List (A9L612301 is 3P, the following are corresponding 3P+N models)

Key Notes for Replacement Selection

1. Selection of 3P and 3P+N: Select according to the system type; 3P is applicable to three-phase three-wire systems, and 3P+N is applicable to three-phase four-wire systems (TN-S/TT).
2. Installation Space Confirmation: The width of the 3P model is 27mm (3 Module), and that of the 3P+N model is 36mm (4 Module). Ensure sufficient installation space in the distribution box during replacement.
3. Backup Protection Coordination: The 3P+N model shall also be used with a 16A-32A circuit breaker to ensure protection coordination.
4. Remote Indication Wiring: The remote indication contact of the 3P+N model is completely the same as that of the 3P model, and the original wiring can be directly reused.
5. Earthing System Compatibility: The 3P+N model is applicable to TN-S and TT earthing systems, while the 3P model is applicable to all three-phase earthing systems.

Schneider A9L612301 (iPRF1 12.5r 3P) Cross-brand Model Comparison

Core Parameter Benchmark: T1+T2 composite protection, Iimp=12.5kA(10/350μs), In=20kA(8/20μs), Imax=50kA(8/20μs), Uc=350V, 3 Stangen, with remote indication, pluggable design, 35mm DIN rail mounting

1. International Mainstream Brand Comparison Table

2. Well-known Domestic Brand Comparison Table

3. Brand	Modell	Kernparameter	Product Features	Replacement Notes
   Delixi	CDYN-I+II 3P 20-350	T1+T2, Iimp=12.5kA, In=20kA, Imax=50kA, Uc=350V, 3P, with remote indication	Pluggable module, built-in thermal trip and overcurrent protection, compliant with GB 18802.1, kostengünstig	Installation width 27mm(3 Module), completely consistent with Schneider, compatible with domestic distribution boxes
   	(DZ47sY Series)
   Chint	NXU-I+II 3P 20-350	T1+T2, Iimp=12.5kA, In=20kA, Imax=50kA, Uc=350V, 3P, with remote indication	Modular design, green/red status indication, automatic disconnection in case of failure, compatible with TN-S/TT earthing systems	Installation width 27mm(3 Module), 16A-32A is recommended for backup protection, high cost performance
   	(Kunlun Series)
   Nader	NXU1-3P/20-350	T1+T2, Iimp=12.5kA, In=20kA, Imax=50kA, Uc=350V, 3P, with remote indication	Pluggable design, low residual voltage (≤1,5 kV), good thermal stability, applicable to industrial and commercial buildings	Installation width 27mm(3 Module), compatible with Schneider products in dimension, equivalent protection performance
   	(Surge Series)

   Key Notes for Replacement Selection

4. Parameter Matching Priority

Must ensure: Uc≥maximum operating voltage of the system (350V is applicable to 400V systems)

Key matching: Test classification (T1+T2), Iimp, In, Imax, pole number are completely consistent

Functional matching: Remote indication contact type (1C/O), pluggable design

2. Installation & Space Confirmation

The width of the standard 3P model is 27mm(3 Module), and that of the 3P+N model is 36mm(4 Module)

Check the DIN rail space and heat dissipation conditions of the distribution box during replacement, and avoid close proximity to heating elements

3. Backup Protection Coordination

All models shall be used with a 16A-32A Type D circuit breaker to ensure protection coordination

The use of Type C circuit breakers is prohibited to avoid maloperation during lightning strikes

4. Earthing System Compatibility

The 3P model is applicable to all three-phase earthing systems (TN-C/TN-S/TT)

The 3P+N model is only applicable to TN-S/TT systems, attention shall be paid to the system earthing type

4. Recommended Priority for Brand Replacement