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Siemens 3TX7130-0RB03 — Motor Control Accessories

Siemens 3TX7130-0RB03 Open Power Relay, 40A DPDT 12V DC

MPN3TX7130-0RB03

Siemens 3TX71 Series open power relay, surface-mount, 40 A DPDT contacts, 12V DC coil, no indicator or test button.

$116.21 – $123.77Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3TX7130-0RB03 — Specifications
ParameterValue
Series3TX71 Series
Motor ratedYes
Coil voltage12V DC
Contact formDPDT
Current rating40 A
Status indicatorNo Indicator
Contact rating40 A @ 12V
Dielectric strength1,500 Vrms Between Contacts; 2,200 Vrms Between Coil and Contact; 2,200 Vrms Between Poles
Push-To-Test buttonNo Test Button
Horsepower @ 120V AC1/3 hp
Relay mounting styleSurface
Coil voltage (Nominal@60Hz)12V DC
Electrical operating durability100,000
Mechanical operating durability1,000,000

Product details

Contact ratings and coil

The Siemens 3TX7130-0RB03 is a surface-mount open power relay from the 3TX71 series, rated for 40 A continuous current with DPDT contact form. Coil pulls in at 12V DC. The DC contact rating matches the main spec at 40 A at 12V. For AC motor loads, the relay carries 1/3 hp at 120V AC. Dielectric strength is 1,500 Vrms between contacts and 2,200 Vrms between coil and contacts or between poles — adequate for isolating control circuits from power circuits in a panel. Electrical durability is rated at 100,000 operations; mechanical durability at 1,000,000.

Surface-mount style — the relay body is designed for panel or chassis mounting, not DIN rail. No status indicator or push-to-test button on the housing, so commissioning checks rely on a multimeter or test fixture.

Frequently asked questions

What is the 3TX7130-0RB03 contact rating?

The 3TX7130-0RB03 is rated for 40 A continuous current with DPDT contact form. DC contact rating is also 40 A at 12V. Motor load rating is 1/3 hp at 120V AC.

Where can I buy the 3TX7130-0RB03?

The 3TX7130-0RB03 is sourced and quoted to order against an RFQ through independent distribution channels. Current pricing and availability are confirmed at quote time.

MPN
3TX7130-0RB03