● Product model: IM-SP401A
● Contact Material: AgSnO2
● Contact form: 1A
● Electrical Life: 10000
● Rated Load: 40A 277VAC, Contact Form: SPST-NO
● Withstand Voltage 4000VAC(Coil Contacts)
● Anti-surge Voltage 6000VAC (1.2/50uS)
● Widely used in EV charging piles and other fields
● TUV/UL Pending, Insulation Level Class F
● Comply with IEC 61810
● Electrical life is 50,000
● The contact load is CC2
● Suitable for 7kW and 11kW charging piles
The IVY IM-SP401A is a miniature, non-latching SPST-NO power relay designed for PCB integration in electrical switching applications. Its published specifications include a 40A rated load, a maximum contact voltage of 277VAC, a 12V coil option, AgSnO₂ contact material and a coil-to-contact dielectric withstand rating of 4000VAC. The relay can be evaluated for suitable solar power equipment, inverter-related assemblies, EV charging equipment and industrial electrical controls, subject to verification of the application requirements.
Manufacturer: IVY
Model: IM-SP401A
Product category: Miniature SPST-NO power relay
Mounting: PCB
Key selection factors: Current rating, contact voltage, coil specification, dielectric performance and applicable standards
Technical support: Contact IVY for the official datasheet and quotation.
The IVY IM-SP401A is a miniature, single-pole normally open power relay designed for high-current electrical switching applications. With a specified 40A rated load, a maximum contact voltage of 277VAC and a 12V coil option, this relay is designed for integration into printed circuit board (PCB) assemblies used in solar power equipment, power control systems and other electrical applications.
For European equipment manufacturers, selecting a suitable power relay involves more than current and voltage ratings. Contact configuration, insulation performance, thermal behaviour, electrical endurance and installation requirements must all be considered. The IM-SP401A offers a compact switching solution for OEM engineers evaluating components for space-constrained equipment designs.
40A rated load: Designed for high-current switching within the specified operating conditions.
277VAC maximum contact voltage: Suitable for applications that comply with the relay's verified switching ratings.
12V coil option: Supports control circuit designs requiring the specified coil voltage. Confirm the exact DC coil specification before ordering.
SPST-NO contact configuration: Provides a single-pole, normally open switching function.
Compact PCB integration: Designed for circuit board installation in electrical equipment.
AgSnO₂ contact material: Silver tin oxide contacts are specified for the product.
High dielectric strength: The product information specifies 4000VAC withstand voltage between the coil and contacts.
Surge withstand capability: The published product information lists a 6000VAC surge voltage rating under a 1.2/50 μs waveform.
Actual switching performance depends on the load type, operating voltage, ambient temperature, switching frequency and the manufacturer's test conditions. Refer to the official datasheet before final design approval.
| Parameter | Specification |
|---|---|
| Product model | IM-SP401A |
| Product type | Miniature non-latching power relay |
| Rated load | 40A |
| Maximum contact voltage | 277VAC |
| Coil voltage | 12V option; confirm exact coil type |
| Contact configuration | SPST-NO, Form A (1A) |
| Contact material | AgSnO₂ |
| Mounting type | PCB mounting |
| Coil-to-contact dielectric withstand | 4000VAC, as published |
| Surge voltage | 6000VAC, 1.2/50 μs, as published |
Important: Confirm the applicable test conditions, continuous current rating, coil voltage specification and electrical endurance with IVY. Do not assume that all maximum ratings can be applied simultaneously under every load condition.
Solar power equipment manufacturers can evaluate the IM-SP401A for switching functions in photovoltaic-related electrical assemblies where its contact ratings and operating characteristics meet the system requirements.
PCB integration can help equipment designers incorporate switching components into compact control boards. Final suitability depends on the circuit topology, load characteristics, insulation requirements and applicable product standards.
Power conversion equipment requires switching components selected according to their operational voltage, current, temperature rise and electrical endurance.
The IM-SP401A may be considered for appropriate switching functions in solar inverter-related equipment. Engineers should verify whether the relay's normally open contact arrangement and electrical ratings match the intended circuit.
High-current PCB power relays are also relevant to electric vehicle charging equipment. IVY lists the IM-SP401A in its EV charging product range, making it a potential candidate for evaluation in suitable charging-system designs.
For EVSE applications, designers should verify the applicable charging standards, load category, contact separation, insulation coordination and required certification status before selecting the relay.
Industrial equipment often requires compact switching components that can be integrated into control boards and electrical assemblies.
The IM-SP401A can be evaluated for suitable electrical control applications where the normally open contact function, coil requirements and rated load match the design.
SPST-NO stands for Single Pole, Single Throw, Normally Open.
In its normal, de-energised state, the relay's normally open contact remains open. When the coil is energised, the contact closes, allowing current to flow through the switched circuit within the specified operating limits. When the coil is de-energised, the contact returns to its normally open state.
The IM-SP401A is a non-latching relay. Unlike a latching relay, it generally requires coil energisation to maintain its actuated state.
This makes the SPST-NO configuration useful for control circuits that require a straightforward on/off switching function.
For OEM manufacturers, choosing a power relay requires balancing electrical performance, component size, installation method and long-term reliability.
The IM-SP401A combines a single-pole normally open contact arrangement with a high-current switching specification and PCB mounting. Its published dielectric withstand and surge specifications may also be relevant when evaluating insulation performance in the intended circuit.
Before production, engineering teams should validate:
Continuous current and contact temperature rise.
Switching voltage and load characteristics.
Coil voltage, coil power and operating tolerances.
Electrical and mechanical endurance under the intended duty cycle.
PCB layout, terminal spacing and thermal management.
Required safety approvals and product compliance documentation.
The published product information lists a rated load of 40A at 277VAC. Confirm the precise operating conditions and permissible continuous current with the manufacturer's datasheet.
SPST-NO means Single Pole, Single Throw, Normally Open. The contact closes when the relay is actuated and returns to the open state when the coil is de-energised.
No. The IM-SP401A is described as a non-latching relay. Its coil generally needs to remain energised while the relay is in the actuated state.
It can be evaluated for suitable switching functions in solar power and inverter-related assemblies. Suitability must be confirmed against the actual circuit, load, switching duty and applicable standards.
The published product information specifies a dielectric withstand voltage of 4000VAC between the coil and contacts. Confirm the test duration and other conditions in the official technical documentation.
European manufacturers should verify the relay's electrical performance and available compliance documentation against the requirements of their finished equipment. Do not assume that a pending certification or a component-level test automatically establishes compliance of the complete product.
Contact IVY with your target application, required coil voltage, operating current, switching voltage and estimated order quantity. Include any required standards or certification documents to help the team assess technical suitability.
Looking for a 40A SPST-NO power relay for a solar power, EV charging or industrial electrical application?
Contact IVY to request the IM-SP401A datasheet, confirm technical compatibility and discuss your OEM requirements.
Provide your application details, electrical operating conditions and estimated purchasing volume to help IVY respond to your enquiry.
