Power Relays Multi-pole Power Relay for Contactor Current Range Capable of Carrying and Switching 40 A at 440 VAC • One pole, 40 A can be carried and switched. • The maximum load capacity of 160 A when using 4-pole parallel connections. • All materials used are compliant with the RoHS Directive • EN 60947-4-1 certification for mirror contact mechanisms has been obtained by using a combination of the relay and auxiliary contact blocks. • A design with a small number of openings makes it difficult for dust or foreign matter to enter. • Ideal for supply power to industrial inverters, servo drivers, and other devices, and switching power to motors and other equipment. • Conforms to European PV standard (VDE0126). Be sure to read the “Safety Precautions” on page 6 and the “Precautions for All Relays with Forcibly Guided Contacts”. For the most recent information on models that have been certified for safety standards, refer to your OMRON website. Model Number Structure Model Number Legend Relay with Auxiliary Contact Block 1. Relay Contact Configuration 4A: 4PST-NO 3A1B: 3PST-NO/SPST-NC 2A2B: DPST-NO/DPST-NC 2. Contact Configuration of Auxiliary Contacts 20: DPST-NO 11: SPST-NO/SPST-NC 02: DPST-NC 3. Contact Mechanism of Auxiliary Contacts Z: Bifurcated crossbar contact Auxiliary Contact Block G73Z-@@ 1 2 1. Contact Configuration of Auxiliary Contacts 20: DPST-NO 11: SPST-NO/SPST-NC 02: DPST-NC 2. Contact Mechanism of Auxiliary Contacts Z: Bifurcated crossbar contact Ordering Information Relay with Auxiliary Contact Block Relay with Auxiliary Contact Block (for Screw Terminals) Structure Classification Relay with Auxiliary Contact Block Contact configuration Auxiliary Contact Relay Block DPST-NO 4PST-NO SPST-NO/SPST-NC DPST-NC DPST-NO 3PST-NO/SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NO DPST-NO/DPST-NC SPST-NO/SPST-NC DPST-NC Rated Voltage Note: 1. Relay contact terminals are M5, and the coil terminals are M3.5. 2. Auxiliary contact block terminals are M3.5. 3. When placing an order, specify the model number and rated supply voltage (12 VDC or 24 VDC).

Contact configuration Rated Voltage Note: 1. Relay contact terminals are M5, and the coil terminals are M3.5. 2. When placing an order, specify the model number and rated supply voltage (12 VDC or 24 VDC). Accessories (Order Separately) Auxiliary Contact Block Classification Structure Contact Configuration DPST-NO SPST-NO/SPST-NC Auxiliary Contact Block Specifications Ratings Coil Item Must operate voltage Rated voltage Must release voltage Maximum voltage Percentage of rated voltage 75% max. Note: 1. Rated current and coil resistance were measured at a coil temperature of 23°C with coil resistance...

Auxiliary contact block Classification Item Maximum operating frequency Rated load Between coil and contacts 10 kV, 1.2 × 50 µs 4.5 kV, 1.2 × 50 µs 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) NO: 10 to 55 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) NC: 10 to 32 to 10 Hz, 0.5-mm single amplitude (1.0-mm double amplitude) Screw mounting: 700 m/s2, DIN Track mounting: 500 m/s2 1,000,000 operations min. (at 1,800 operations/h, contact no load) Between contacts of different polarity Destruction Shock resistance Between contacts of the same polarity Vibration...

Dimensions Relay (12 VDC, 24 VDC) with Auxiliary Contact Block 4 Poles Mounting Hole Dimensions Two, M4 Note: The dimensions are typical values. Mounting Hole Dimensions Two, M4 Note: The dimensions are typical values. Contact Block Auxiliary DIN Track Mounting Height (when using the PFP-100N or PFP-50N mounting rail) 15 13 47 Note: The dimensions are typical values. Note: The dimensions are typical values.

G7Z Terminal Arrangement/Internal Connections Relay with Auxiliary Contact Block G7Z-4A-20Z Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Note: The coil has no polarity. Auxiliary Contact Block G73Z-20Z 53

Safety Precautions Be sure to read the precautions “Precautions for All Relays” and “Precautions for All Relays with Forcibly Guided Contacts” in the website at:http://www.ia.omron.com/. Indication and Meaning for Safe Use Indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury, or may result in serious injury or death. Additionally there may be significant property damage. • To mount the Relay, secure M4 screws in two locations. Use a screw-tightening torque of 1.2 to 1.3 N·m. Indicates a potentially hazardous situation which, if not avoided,...

G7Z Mounting and Removal Mounting Recommended Crimp Terminals and Wire Insert the tab on the auxiliary contact block into the groove on the Relay and press down until the hook on the auxiliary contact block catches in the mounting hole on the Relay. Coil section Appropriate wire size • Use the following tightening torque when tightening screws. Loose screws may result in fire caused by abnormal heat generated when the power is being supplied. M5 screws: 2.0 to 2.2 N·m M3.5 screws: 0.8 to 0.9 N·m • Allow suitable slack on leads when wiring, and do not subject the terminals to excessive force....

G7Z Mirror Contact Mechanism By combining a Relay with an auxiliary contact block, all NC contacts of the auxiliary contact block will satisfy an impulse withstand voltage of 2.5 kV or higher or maintain a gap of 0.5 mm or greater when the coil is de-energized even if at least one NO contact (main contact) of the Relay is welded. Description of Mirror Contact Mechanism Impulse withstand voltage: 2.5 kV min. or contact separation (a + b): 0.5 mm min. a Auxiliary contact block Contact welding

Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR...