Siemens 3RR21421AW30 2-Phase Current Monitoring Relay, 4 A – 40 A
The SIEMENS Current Monitoring Relay (MPN 3RR21421AW30) is a 2-phase relay that monitors for over and under current conditions. It operates within a 4 A to 40 A range, providing essential protection for industrial…
SKU 3G-OTH-28768
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The SIEMENS Current Monitoring Relay (MPN 3RR21421AW30) is a 2-phase relay that monitors for over and under current conditions. It operates within a 4 A to 40 A range, providing essential protection for industrial equipment.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the SIEMENS 3RR21421AW30 current monitoring relay used for?
The SIEMENS 3RR21421AW30 current monitoring relay protects industrial equipment by detecting over and under current conditions in 2-phase systems. It is commonly used in motor control centers, pumps, and conveyors to prevent damage from electrical faults, ensuring operational safety and reducing downtime.
What are the specifications of the SIEMENS 3RR21421AW30 current monitoring relay?
The SIEMENS 3RR21421AW30 is a 2-phase current monitoring relay with a 4 A to 40 A range. It includes both over and under current monitoring functions. The manufacturer part number is 3RR21421AW30, and it is designed for industrial applications requiring reliable phase and current protection.
Where to buy the SIEMENS 3RR21421AW30 current monitoring relay worldwide?
You can source the SIEMENS 3RR21421AW30 current monitoring relay through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine Siemens components for industrial protection needs.
How to install the SIEMENS 3RR21421AW30 current monitoring relay?
Install the SIEMENS 3RR21421AW30 relay by mounting it on a DIN rail in a control panel. Connect the 2-phase supply through the relay's current transformers, and wire the output contacts to your alarm or trip circuit. Always follow Siemens wiring diagrams and de-energize the system before installation to ensure safety.
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3G Electric supplies Siemens current monitoring relays. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.