RM1A Zero Switching SSRs

Carlo Gavazzi RM1A Zero Switching SSRs are industrial single-phase AC Solid State Relays (SSRs) with a built-in varistor. This built-in varistor secures transient protection for heavy industrial applications. These SSRs utilize Direct Copper Bonding (DCB) technology and feature self-lifting terminals, a clip-on IP20 protection cover, and an LED indicator. The RM1A SSRs can be used for resistive, inductive, and capacitive loads. These zero-switching relays switch ON when the sinusoidal curve crosses zero and OFF when the current crosses zero. The RM1A SSRs offer up to 1400VP blocking voltage, >4000VACrms opto-isolation, and two input ranges, including 3VDC to 32VDC and 20VAC to 280VAC/22VDC to 48VDC.

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Description Datasheet Availability Pricing (CRC) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Type
Mounting Style
Load Current Rating
Load Voltage Rating
Relay Contact Form
Output Type
Control Voltage Range
Input Current
Minimum Operating Temperature
Maximum Operating Temperature
IP Rating
Series
Length
Width
Height
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 50A 4.5-32 VDC LED
Datasheet
662In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 230 VAC 1 Form A (SPST-NO) Zero Switching 3 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 75A 24-265 VAC LED
Datasheet
19In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 75 A 480 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 100A 24-265VAC LED
Datasheet
15In Stock
Min.: 1
Mult.: 1
Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 75A 24-265 VAC LED
Datasheet
9In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 75 A 230 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 50A 24-265 VAC LED
Datasheet
33In Stock
1On Order
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 230 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 25A 4.5-32 VDC LED
Datasheet
77In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 25 A 230 VAC 1 Form A (SPST-NO) Zero Switching 3 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 75A 4.5-32 VDC LED
Datasheet
23In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 75 A 230 VAC 1 Form A (SPST-NO) Zero Switching 3 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 50A 24-265 VAC LED
Datasheet
23In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 480 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 100A 4.5-32VDC LED
Datasheet
17In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 100 A 480 VAC 1 Form A (SPST-NO) Zero Switching 4 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 50A 4.5-32 VDC LED
Datasheet
38In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 480 VAC 1 Form A (SPST-NO) Zero Switching 4 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 100A 24-265VAC LED
Datasheet
9In Stock
Min.: 1
Mult.: 1

Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 50A 24-265 VAC LED
Datasheet
19In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 600 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 100A 4.5-32VDC LED
Datasheet
54In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 100 A 600 VAC 1 Form A (SPST-NO) Zero Switching 4 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 50A 4.5-32 VDC LED
Datasheet
41In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 600 VAC 1 Form A (SPST-NO) Zero Switching 4 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 25A 24-265 VAC LED
Datasheet
24In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 25 A 230 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 58.2 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 400V 50A 4.5-32 VDC LED
Datasheet
4In Stock
20On Order
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 50 A 400 VAC 1 Form A (SPST-NO) Zero Switching 4 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 25A 4.5-32 VDC LED
Datasheet
16In Stock
Min.: 1
Mult.: 1

Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 75A 4.5-32 VDC LED
Datasheet
7In Stock
20Expected 9/10/2026
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 75 A 480 VAC 1 Form A (SPST-NO) Zero Switching 3 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 25A 24-265 VAC LED
Datasheet
9In Stock
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 25 A 600 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 25A 4.5-32 VDC LED
Datasheet
11In Stock
Min.: 1
Mult.: 1
Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 600V 75A 4.5-32 VDC LED
Datasheet
20Expected 10/26/2026
Min.: 1
Mult.: 1

Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 480V 25A 24-265 VAC LED
Datasheet
20Expected 11/3/2026
Min.: 1
Mult.: 1

Single Phase Relays SSR Panel Mount 25 A 480 VAC 1 Form A (SPST-NO) Zero Switching 20 VAC to 280 VAC, 22 VDC to 48 VDC 20 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 100A 24-265VAC LED
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 20
Mult.: 1

Solid State Relays RM1A
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 230V 100A 4.5-32VDC LED
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 20
Mult.: 1

Single Phase Relays SSR Panel Mount 100 A 230 VAC 1 Form A (SPST-NO) Zero Switching 3 VDC to 32 VDC 12 mA - 20 C + 100 C IP20 RM1A 58.2 mm 44.8 mm 28.8 mm
Carlo Gavazzi Solid State Relays - SSRs SSR ZS 400V 25A 24-265 VAC LED
Datasheet
Non-Stocked Lead-Time 10 Weeks
Min.: 20
Mult.: 1

Solid State Relays RM1A